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  1. #51

    Re: Nordost QKore grounding unit

    Here’s another one: CAD GC1 and GC3.

    https://www.computeraudiodesign.com/gc1-ground-control/

    http://www.theaudiobeat.com/blog/cad_gc1_gc3.htm


    Sent from my iPad using Tapatalk
    “Life’s too short to listen to bad audio.”

    Big rig: Brinkmann Taurus DD TT + 12.1 arm + Lyra Etna Lambda SL MC + HRS M3X2/ Cardas Clear Beyond phono/ Stillpoints LPI/ Brinkmann Edison mk2 phono + RöNT II Tube PS/ Synology NAS with Roon + HD Plex linear PSU + Shunyata HD/ AQ Vodka RJ45 + Aqvox Network Switch SE + AQ Diamond RJ45 into DAC/ Brinkmann Nyquist mk2/ Audionet Humboldt/ Cardas Clear Beyond ICs/ Kharma DB9-S 1.1 LS/ Inakustik Reference LS 4004 AIR/ Audioquest Niagara 5000/ Shunyata Alpha power (HC, Analogue, Digital)/ Finite Elemente Pagode Rack/ Stillpoints Ultra SS/ Vicoustic panels + Stillpoints Aperture II.

    Small rig: Naim UnitiServe/ Curious USB/ Tidal/ Linn Klimax DS3/ Shunyata Power cable/ Pass Labs INT-60/ Acoustic Zen Silver Reference II/ HiD Diamond 8/ Harbeth 30.2 40th Anniversary/ Shunyata Venom EU7 & Venom 3 HD.

    HP rig: MacBookAir/ Tidal/ Auralic Gemini 2000/ Sbooster LPSU/ Audeze LCD-2 Classic + WyWires Red/ Shunyata HD/ Shunyata Hydra 2/ Shunyata Venom.

  2. #52

    Nordost QKore grounding unit

    Next step in my experiment: Pliers, 10 AWG insulated pure copper wire, different types of connectors, copper o-rings, copper screws, drill bit, sorbothane feet.



    Sent from my iPad using Tapatalk
    “Life’s too short to listen to bad audio.”

    Big rig: Brinkmann Taurus DD TT + 12.1 arm + Lyra Etna Lambda SL MC + HRS M3X2/ Cardas Clear Beyond phono/ Stillpoints LPI/ Brinkmann Edison mk2 phono + RöNT II Tube PS/ Synology NAS with Roon + HD Plex linear PSU + Shunyata HD/ AQ Vodka RJ45 + Aqvox Network Switch SE + AQ Diamond RJ45 into DAC/ Brinkmann Nyquist mk2/ Audionet Humboldt/ Cardas Clear Beyond ICs/ Kharma DB9-S 1.1 LS/ Inakustik Reference LS 4004 AIR/ Audioquest Niagara 5000/ Shunyata Alpha power (HC, Analogue, Digital)/ Finite Elemente Pagode Rack/ Stillpoints Ultra SS/ Vicoustic panels + Stillpoints Aperture II.

    Small rig: Naim UnitiServe/ Curious USB/ Tidal/ Linn Klimax DS3/ Shunyata Power cable/ Pass Labs INT-60/ Acoustic Zen Silver Reference II/ HiD Diamond 8/ Harbeth 30.2 40th Anniversary/ Shunyata Venom EU7 & Venom 3 HD.

    HP rig: MacBookAir/ Tidal/ Auralic Gemini 2000/ Sbooster LPSU/ Audeze LCD-2 Classic + WyWires Red/ Shunyata HD/ Shunyata Hydra 2/ Shunyata Venom.

  3. #53
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    Re: Nordost QKore grounding unit

    Yesterday we finished our Nordost QKORE6 tests


    and I know, that price is a little bit crazy, but ... We just love the improvements which Nordost made in our systems.
    Marcin

  4. #54

    Re: Nordost QKore grounding unit

    Yeah, well, my polish is not that good really Nordost QKore grounding unit.


    Sent from my iPad using Tapatalk
    “Life’s too short to listen to bad audio.”

    Big rig: Brinkmann Taurus DD TT + 12.1 arm + Lyra Etna Lambda SL MC + HRS M3X2/ Cardas Clear Beyond phono/ Stillpoints LPI/ Brinkmann Edison mk2 phono + RöNT II Tube PS/ Synology NAS with Roon + HD Plex linear PSU + Shunyata HD/ AQ Vodka RJ45 + Aqvox Network Switch SE + AQ Diamond RJ45 into DAC/ Brinkmann Nyquist mk2/ Audionet Humboldt/ Cardas Clear Beyond ICs/ Kharma DB9-S 1.1 LS/ Inakustik Reference LS 4004 AIR/ Audioquest Niagara 5000/ Shunyata Alpha power (HC, Analogue, Digital)/ Finite Elemente Pagode Rack/ Stillpoints Ultra SS/ Vicoustic panels + Stillpoints Aperture II.

    Small rig: Naim UnitiServe/ Curious USB/ Tidal/ Linn Klimax DS3/ Shunyata Power cable/ Pass Labs INT-60/ Acoustic Zen Silver Reference II/ HiD Diamond 8/ Harbeth 30.2 40th Anniversary/ Shunyata Venom EU7 & Venom 3 HD.

    HP rig: MacBookAir/ Tidal/ Auralic Gemini 2000/ Sbooster LPSU/ Audeze LCD-2 Classic + WyWires Red/ Shunyata HD/ Shunyata Hydra 2/ Shunyata Venom.

  5. #55
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    Re: Nordost QKore grounding unit

    Quote Originally Posted by Kuoppis View Post
    Yeah, well, my polish is not that good really Nordost QKore grounding unit.


    Sent from my iPad using Tapatalk
    Chrome built in translator could help
    Marcin

  6. #56

    Re: Nordost QKore grounding unit

    Quote Originally Posted by SoundRebels View Post
    Chrome built in translator could help
    Yes, or google translate for that matter...

    Too much gibberish and too inconvenient to read for my liking.


    Sent from my iPad using Tapatalk
    “Life’s too short to listen to bad audio.”

    Big rig: Brinkmann Taurus DD TT + 12.1 arm + Lyra Etna Lambda SL MC + HRS M3X2/ Cardas Clear Beyond phono/ Stillpoints LPI/ Brinkmann Edison mk2 phono + RöNT II Tube PS/ Synology NAS with Roon + HD Plex linear PSU + Shunyata HD/ AQ Vodka RJ45 + Aqvox Network Switch SE + AQ Diamond RJ45 into DAC/ Brinkmann Nyquist mk2/ Audionet Humboldt/ Cardas Clear Beyond ICs/ Kharma DB9-S 1.1 LS/ Inakustik Reference LS 4004 AIR/ Audioquest Niagara 5000/ Shunyata Alpha power (HC, Analogue, Digital)/ Finite Elemente Pagode Rack/ Stillpoints Ultra SS/ Vicoustic panels + Stillpoints Aperture II.

    Small rig: Naim UnitiServe/ Curious USB/ Tidal/ Linn Klimax DS3/ Shunyata Power cable/ Pass Labs INT-60/ Acoustic Zen Silver Reference II/ HiD Diamond 8/ Harbeth 30.2 40th Anniversary/ Shunyata Venom EU7 & Venom 3 HD.

    HP rig: MacBookAir/ Tidal/ Auralic Gemini 2000/ Sbooster LPSU/ Audeze LCD-2 Classic + WyWires Red/ Shunyata HD/ Shunyata Hydra 2/ Shunyata Venom.

  7. #57
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    Re: Nordost QKore grounding unit

    It's a real challenge for a translator program to deal with mis-used technical words.

  8. #58
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    Re: Nordost QKore grounding unit

    If Nordost or Polish distributor order English translation I'll inform You asap.
    Marcin

  9. #59
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    Re: Nordost QKore grounding unit

    I need to borrow one and take it apart.
    Adam

    Speakers: Magico M3
    Amp: Dagostino Momentum Stereo
    Digital: Lampi Pacific + Lampi DSD Komputer
    Cables: AQ WEL Signature IC / Synergistic Research Foundation / AQ Hurricane PCs

  10. #60
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    Re: Nordost QKore grounding unit

    Quote Originally Posted by Elberoth View Post
    I need to borrow one and take it apart.
    Good luck with that, I recall reading that the internal components are potted which is pretty common in such devices. You may be able to see some internal wiring but not much else without destroying the unit in the process.

  11. #61

    Nordost QKore grounding unit

    Yet another step in experiment.

    A bit semi-serious, but fun. Would be interesting to see though, what Adam might find inside the QKore housings.



    Sent from my iPad using Tapatalk
    “Life’s too short to listen to bad audio.”

    Big rig: Brinkmann Taurus DD TT + 12.1 arm + Lyra Etna Lambda SL MC + HRS M3X2/ Cardas Clear Beyond phono/ Stillpoints LPI/ Brinkmann Edison mk2 phono + RöNT II Tube PS/ Synology NAS with Roon + HD Plex linear PSU + Shunyata HD/ AQ Vodka RJ45 + Aqvox Network Switch SE + AQ Diamond RJ45 into DAC/ Brinkmann Nyquist mk2/ Audionet Humboldt/ Cardas Clear Beyond ICs/ Kharma DB9-S 1.1 LS/ Inakustik Reference LS 4004 AIR/ Audioquest Niagara 5000/ Shunyata Alpha power (HC, Analogue, Digital)/ Finite Elemente Pagode Rack/ Stillpoints Ultra SS/ Vicoustic panels + Stillpoints Aperture II.

    Small rig: Naim UnitiServe/ Curious USB/ Tidal/ Linn Klimax DS3/ Shunyata Power cable/ Pass Labs INT-60/ Acoustic Zen Silver Reference II/ HiD Diamond 8/ Harbeth 30.2 40th Anniversary/ Shunyata Venom EU7 & Venom 3 HD.

    HP rig: MacBookAir/ Tidal/ Auralic Gemini 2000/ Sbooster LPSU/ Audeze LCD-2 Classic + WyWires Red/ Shunyata HD/ Shunyata Hydra 2/ Shunyata Venom.

  12. #62
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    Re: Nordost QKore grounding unit

    Dis-assembly is not required. An Ohm meter is all you need.

  13. #63

    Nordost QKore grounding unit

    And so...


    ...the DIY grounding device sits snugly in the rack along with the Aqvox SE switch.


    Now the most important question: what do I hear? Instrument separation appears a bit better, details are easier to make out. Soundstaging is more organized. Everything sounds a bit more relaxed.

    Is it the same thing I heard in the QKore demo 1 1/2 years back? Couldn’t possibly tell, as my aural memory is not that accurate that far back. Maybe I borrow a QKore unit somewhere to do an A/B comparison.

    Verdict: I like what I’m hearing. And it looks nice, I’ll keep my €150,- QKore challenger Nordost QKore grounding unit.


    Sent from my iPad using Tapatalk
    “Life’s too short to listen to bad audio.”

    Big rig: Brinkmann Taurus DD TT + 12.1 arm + Lyra Etna Lambda SL MC + HRS M3X2/ Cardas Clear Beyond phono/ Stillpoints LPI/ Brinkmann Edison mk2 phono + RöNT II Tube PS/ Synology NAS with Roon + HD Plex linear PSU + Shunyata HD/ AQ Vodka RJ45 + Aqvox Network Switch SE + AQ Diamond RJ45 into DAC/ Brinkmann Nyquist mk2/ Audionet Humboldt/ Cardas Clear Beyond ICs/ Kharma DB9-S 1.1 LS/ Inakustik Reference LS 4004 AIR/ Audioquest Niagara 5000/ Shunyata Alpha power (HC, Analogue, Digital)/ Finite Elemente Pagode Rack/ Stillpoints Ultra SS/ Vicoustic panels + Stillpoints Aperture II.

    Small rig: Naim UnitiServe/ Curious USB/ Tidal/ Linn Klimax DS3/ Shunyata Power cable/ Pass Labs INT-60/ Acoustic Zen Silver Reference II/ HiD Diamond 8/ Harbeth 30.2 40th Anniversary/ Shunyata Venom EU7 & Venom 3 HD.

    HP rig: MacBookAir/ Tidal/ Auralic Gemini 2000/ Sbooster LPSU/ Audeze LCD-2 Classic + WyWires Red/ Shunyata HD/ Shunyata Hydra 2/ Shunyata Venom.

  14. #64
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    Re: Nordost QKore grounding unit

    Did you try to ground the whole thing to the AC outlet ground in the wall ?
    Adam

    Speakers: Magico M3
    Amp: Dagostino Momentum Stereo
    Digital: Lampi Pacific + Lampi DSD Komputer
    Cables: AQ WEL Signature IC / Synergistic Research Foundation / AQ Hurricane PCs

  15. #65

    Nordost QKore grounding unit

    Quote Originally Posted by Elberoth View Post
    Did you try to ground the whole thing to the AC outlet ground in the wall ?
    No, I did not. It’s purely passive. The QKore is not either grounded to an AC outlet.

    And after reading the cautions on the website you sent a link to, I did not fancy to risk frying up my house, audio system and potentially everyone in the house.


    Sent from my iPad using Tapatalk
    “Life’s too short to listen to bad audio.”

    Big rig: Brinkmann Taurus DD TT + 12.1 arm + Lyra Etna Lambda SL MC + HRS M3X2/ Cardas Clear Beyond phono/ Stillpoints LPI/ Brinkmann Edison mk2 phono + RöNT II Tube PS/ Synology NAS with Roon + HD Plex linear PSU + Shunyata HD/ AQ Vodka RJ45 + Aqvox Network Switch SE + AQ Diamond RJ45 into DAC/ Brinkmann Nyquist mk2/ Audionet Humboldt/ Cardas Clear Beyond ICs/ Kharma DB9-S 1.1 LS/ Inakustik Reference LS 4004 AIR/ Audioquest Niagara 5000/ Shunyata Alpha power (HC, Analogue, Digital)/ Finite Elemente Pagode Rack/ Stillpoints Ultra SS/ Vicoustic panels + Stillpoints Aperture II.

    Small rig: Naim UnitiServe/ Curious USB/ Tidal/ Linn Klimax DS3/ Shunyata Power cable/ Pass Labs INT-60/ Acoustic Zen Silver Reference II/ HiD Diamond 8/ Harbeth 30.2 40th Anniversary/ Shunyata Venom EU7 & Venom 3 HD.

    HP rig: MacBookAir/ Tidal/ Auralic Gemini 2000/ Sbooster LPSU/ Audeze LCD-2 Classic + WyWires Red/ Shunyata HD/ Shunyata Hydra 2/ Shunyata Venom.

  16. #66
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    Re: Nordost QKore grounding unit

    Would you share your sources for the items used in your project?
    Synology 1019D+ - SGC Sonictransporter I9 w Roon/HQ Player- UltraRendu- PBD Stream IF to Playback Designs MPS5 via fiber optic - ARC 40th Anniversary Pre - ARC 610 T's - Martin Logan CLX's - 4 Martin Logan Depth i Subs - Shunyata Hydra, DIY PCOCC interconnects, speaker cables and power cords with Furutech terminations. Blue Jeans CAT 6's. Acoustically treated room with one permanent chair.

  17. #67

    Nordost QKore grounding unit

    Quote Originally Posted by brad225 View Post
    Would you share your sources for the items used in your project?
    Hi Brad, the sources are really nothing special:

    - drill bits, screws, dowels, pliers and 10 AWG speaker wire from my local DIY store
    - various types of connectors, copper o-rings and sorbothane feet from Amazon
    - 5 KG copper bar from an ebay seller (also any metal trader on the web will do)


    Sent from my iPad using Tapatalk
    “Life’s too short to listen to bad audio.”

    Big rig: Brinkmann Taurus DD TT + 12.1 arm + Lyra Etna Lambda SL MC + HRS M3X2/ Cardas Clear Beyond phono/ Stillpoints LPI/ Brinkmann Edison mk2 phono + RöNT II Tube PS/ Synology NAS with Roon + HD Plex linear PSU + Shunyata HD/ AQ Vodka RJ45 + Aqvox Network Switch SE + AQ Diamond RJ45 into DAC/ Brinkmann Nyquist mk2/ Audionet Humboldt/ Cardas Clear Beyond ICs/ Kharma DB9-S 1.1 LS/ Inakustik Reference LS 4004 AIR/ Audioquest Niagara 5000/ Shunyata Alpha power (HC, Analogue, Digital)/ Finite Elemente Pagode Rack/ Stillpoints Ultra SS/ Vicoustic panels + Stillpoints Aperture II.

    Small rig: Naim UnitiServe/ Curious USB/ Tidal/ Linn Klimax DS3/ Shunyata Power cable/ Pass Labs INT-60/ Acoustic Zen Silver Reference II/ HiD Diamond 8/ Harbeth 30.2 40th Anniversary/ Shunyata Venom EU7 & Venom 3 HD.

    HP rig: MacBookAir/ Tidal/ Auralic Gemini 2000/ Sbooster LPSU/ Audeze LCD-2 Classic + WyWires Red/ Shunyata HD/ Shunyata Hydra 2/ Shunyata Venom.

  18. #68
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    Re: Nordost QKore grounding unit

    It’s what I would call a “Dirty Ground”, meaning simple and effective.

    Did I see a RJ45 connection? If not, consider making that cable for the AQVox SE.

    Last is to now try to encase you piece and isolate it, then put the German Crest on it and sell it for $1200 Euros. Nordost QKore grounding unit




    Sent from my iPhone using Tapatalk Pro
    Source Analog: Kuzma Stabi R w/4point 11 arm | Kuzma 50 Cartridge
    Source Digital: Aurender N10 | Brinkmann Nyquist MK II
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  19. #69
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    Nordost QKore grounding unit

    Kuoppis,

    So, regardless of what the QKore does or claims to do (even if its the same ultimate function as your DIY unit) how is your experiment considered a ground of any sort if the block of copper itself that everything is tied to (component wise) is sitting on a wood or other non conductive shelf with rubber feet isolating the block of copper and said shelf and has no tie, conductive-cable-wise to anything else?

    Could you do the same kind of component-group-tie-down to a granite slab or a piece of Corian countertop or a slab of cork and expect different or the same results? Why is the copper block needed if it floats above ground? Isn't that called "not grounded"?

  20. #70

    Nordost QKore grounding unit

    Quote Originally Posted by UltraFast69 View Post
    It’s what I would call a “Dirty Ground”, meaning simple and effective.

    Did I see a RJ45 connection? If not, consider making that cable for the AQVox SE.

    Last is to now try to encase you piece and isolate it, then put the German Crest on it and sell it for $1200 Euros. Nordost QKore grounding unit
    Yes, you did indeed see an RJ45 connector.

    In one of your postings you told that you connected the Aqvox SE to the QKore, and heard an improvement. So I followed suit.

    You call this dirty ground, I call it quick & dirty ground Nordost QKore grounding unit.

    Sent from my iPad using Tapatalk
    “Life’s too short to listen to bad audio.”

    Big rig: Brinkmann Taurus DD TT + 12.1 arm + Lyra Etna Lambda SL MC + HRS M3X2/ Cardas Clear Beyond phono/ Stillpoints LPI/ Brinkmann Edison mk2 phono + RöNT II Tube PS/ Synology NAS with Roon + HD Plex linear PSU + Shunyata HD/ AQ Vodka RJ45 + Aqvox Network Switch SE + AQ Diamond RJ45 into DAC/ Brinkmann Nyquist mk2/ Audionet Humboldt/ Cardas Clear Beyond ICs/ Kharma DB9-S 1.1 LS/ Inakustik Reference LS 4004 AIR/ Audioquest Niagara 5000/ Shunyata Alpha power (HC, Analogue, Digital)/ Finite Elemente Pagode Rack/ Stillpoints Ultra SS/ Vicoustic panels + Stillpoints Aperture II.

    Small rig: Naim UnitiServe/ Curious USB/ Tidal/ Linn Klimax DS3/ Shunyata Power cable/ Pass Labs INT-60/ Acoustic Zen Silver Reference II/ HiD Diamond 8/ Harbeth 30.2 40th Anniversary/ Shunyata Venom EU7 & Venom 3 HD.

    HP rig: MacBookAir/ Tidal/ Auralic Gemini 2000/ Sbooster LPSU/ Audeze LCD-2 Classic + WyWires Red/ Shunyata HD/ Shunyata Hydra 2/ Shunyata Venom.

  21. #71

    Re: Nordost QKore grounding unit

    Quote Originally Posted by MikeCh View Post
    Kuoppis,

    So, regardless of what the QKore does or claims to do (even if its the same ultimate function as your DIY unit) how is your experiment considered a ground of any sort if the block of copper itself that everything is tied to (component wise) is sitting on a wood or other non conductive shelf with rubber feet isolating the block of copper and said shelf and has no tie, conductive-cable-wise to anything else?

    Could you do the same kind of component-group-tie-down to a granite slab or a piece of Corian countertop or a slab of cork and expect different or the same results? Why is the copper block needed if it floats above ground? Isn't that called "not grounded"?
    Good questions, Mike. Here’s the thought process.

    Similar to the QKore, the copper bar serves as a common ground for all connected devices. The QKore is also just placed somewhere in the vicinity of the system. Electrical ground does not necessarily mean “ground” literally, it is just a common load reference point for the connected gear.

    Also in your household you have several “grounds”. The principle is the same when you ground your turntable. You don’t ground it to earth mass, but rather with the preamplifier it is playing with.

    Go try out the QKore in your system. I think it makes a difference.


    Sent from my iPad using Tapatalk
    “Life’s too short to listen to bad audio.”

    Big rig: Brinkmann Taurus DD TT + 12.1 arm + Lyra Etna Lambda SL MC + HRS M3X2/ Cardas Clear Beyond phono/ Stillpoints LPI/ Brinkmann Edison mk2 phono + RöNT II Tube PS/ Synology NAS with Roon + HD Plex linear PSU + Shunyata HD/ AQ Vodka RJ45 + Aqvox Network Switch SE + AQ Diamond RJ45 into DAC/ Brinkmann Nyquist mk2/ Audionet Humboldt/ Cardas Clear Beyond ICs/ Kharma DB9-S 1.1 LS/ Inakustik Reference LS 4004 AIR/ Audioquest Niagara 5000/ Shunyata Alpha power (HC, Analogue, Digital)/ Finite Elemente Pagode Rack/ Stillpoints Ultra SS/ Vicoustic panels + Stillpoints Aperture II.

    Small rig: Naim UnitiServe/ Curious USB/ Tidal/ Linn Klimax DS3/ Shunyata Power cable/ Pass Labs INT-60/ Acoustic Zen Silver Reference II/ HiD Diamond 8/ Harbeth 30.2 40th Anniversary/ Shunyata Venom EU7 & Venom 3 HD.

    HP rig: MacBookAir/ Tidal/ Auralic Gemini 2000/ Sbooster LPSU/ Audeze LCD-2 Classic + WyWires Red/ Shunyata HD/ Shunyata Hydra 2/ Shunyata Venom.

  22. #72

    Nordost QKore grounding unit

    This morning the effect is even greater. I presume that is due to the components having equalized the ground loading overnight.

    In addition to what was described yesterday, the highs appear precise but less sharp while not losing snappiness, and bass is slightly more substantial while feeling less bloated. Yet decays are longer. All in all, I have the impression the sound is more precise or true to what is on the recording.

    As this is a passive setup, it for sure takes a while to settle.


    Sent from my iPad using Tapatalk
    “Life’s too short to listen to bad audio.”

    Big rig: Brinkmann Taurus DD TT + 12.1 arm + Lyra Etna Lambda SL MC + HRS M3X2/ Cardas Clear Beyond phono/ Stillpoints LPI/ Brinkmann Edison mk2 phono + RöNT II Tube PS/ Synology NAS with Roon + HD Plex linear PSU + Shunyata HD/ AQ Vodka RJ45 + Aqvox Network Switch SE + AQ Diamond RJ45 into DAC/ Brinkmann Nyquist mk2/ Audionet Humboldt/ Cardas Clear Beyond ICs/ Kharma DB9-S 1.1 LS/ Inakustik Reference LS 4004 AIR/ Audioquest Niagara 5000/ Shunyata Alpha power (HC, Analogue, Digital)/ Finite Elemente Pagode Rack/ Stillpoints Ultra SS/ Vicoustic panels + Stillpoints Aperture II.

    Small rig: Naim UnitiServe/ Curious USB/ Tidal/ Linn Klimax DS3/ Shunyata Power cable/ Pass Labs INT-60/ Acoustic Zen Silver Reference II/ HiD Diamond 8/ Harbeth 30.2 40th Anniversary/ Shunyata Venom EU7 & Venom 3 HD.

    HP rig: MacBookAir/ Tidal/ Auralic Gemini 2000/ Sbooster LPSU/ Audeze LCD-2 Classic + WyWires Red/ Shunyata HD/ Shunyata Hydra 2/ Shunyata Venom.

  23. #73
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    Re: Nordost QKore grounding unit

    With all due respect, what has been done with this DIY approach is simply implementing a common or star grounding point between your components. It doesn't really have much in common with what Nordost seems to be doing with their full QKORE system, which provides two artificially cleaned parallel ground points for system power and signal grounds independently. While some may question the approach it seems that most audiophiles who have actually heard the difference the QKORE makes in their system recognize and acknowledge the audible improvements it makes. I'm not disputing that basic star grounding can also make an audible improvement in many systems, but I don't really see that such an approach is replicating the QKORE implementation. I would be interested in seeing if someone trying a DIY star ground would borrow the Nordost QKORE system to compare to in their system, now that would be interesting!

  24. #74
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    Re: Nordost QKore grounding unit

    A question for all of you that have tried or are thinking about trying a grounding product.

    Did you choose to try it because you heard something you didn't like in the sound of your system or just curiosity of what might be?
    Synology 1019D+ - SGC Sonictransporter I9 w Roon/HQ Player- UltraRendu- PBD Stream IF to Playback Designs MPS5 via fiber optic - ARC 40th Anniversary Pre - ARC 610 T's - Martin Logan CLX's - 4 Martin Logan Depth i Subs - Shunyata Hydra, DIY PCOCC interconnects, speaker cables and power cords with Furutech terminations. Blue Jeans CAT 6's. Acoustically treated room with one permanent chair.

  25. #75

    Nordost QKore grounding unit

    Quote Originally Posted by audio.bill View Post
    With all due respect, what has been done with this DIY approach is simply implementing a common or star grounding point between your components. It doesn't really have much in common with what Nordost seems to be doing with their full QKORE system, which provides two artificially cleaned parallel ground points for system power and signal grounds independently. While some may question the approach it seems that most audiophiles who have actually heard the difference the QKORE makes in their system recognize and acknowledge the audible improvements it makes. I'm not disputing that basic star grounding can also make an audible improvement in many systems, but I don't really see that such an approach is replicating the QKORE implementation. I would be interested in seeing if someone trying a DIY star ground would borrow the Nordost QKORE system to compare to in their system, now that would be interesting!
    Hi Bill, do you remember what happened last time when you copied something from QKore product marketing materials?

    audio.bill: The first difference in their system is that it provides a method for providing an artificial clean ground point, which is described as using "Low-Voltage Attractor Plates (LVAPs), constructed with a proprietary metal alloy and a passive electronic circuit, in order to draw stray high frequency noise and voltage-generated magnetic fields to a manufactured earth point leaving a clean reference behind.

    Kuoppis: Bill, as I am not familiar with the technology, what are Low Voltage Attractor Plates, technically speaking?

    audio.bill: That was quoted from Nordost's product description and I don't have any more specific knowledge of their construction. Sorry about that.

    So, could you this time around elaborate on what exactly are artificially cleaned ground points? Thanks.

    I guess most companies invent fancy marketing names for their products and features to make them more interesting. Nevertheless, those products can sometimes be surprisingly simple. That’s why I did this experiment.

    Sent from my iPad using Tapatalk
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    Big rig: Brinkmann Taurus DD TT + 12.1 arm + Lyra Etna Lambda SL MC + HRS M3X2/ Cardas Clear Beyond phono/ Stillpoints LPI/ Brinkmann Edison mk2 phono + RöNT II Tube PS/ Synology NAS with Roon + HD Plex linear PSU + Shunyata HD/ AQ Vodka RJ45 + Aqvox Network Switch SE + AQ Diamond RJ45 into DAC/ Brinkmann Nyquist mk2/ Audionet Humboldt/ Cardas Clear Beyond ICs/ Kharma DB9-S 1.1 LS/ Inakustik Reference LS 4004 AIR/ Audioquest Niagara 5000/ Shunyata Alpha power (HC, Analogue, Digital)/ Finite Elemente Pagode Rack/ Stillpoints Ultra SS/ Vicoustic panels + Stillpoints Aperture II.

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  26. #76

    Re: Nordost QKore grounding unit

    Quote Originally Posted by brad225 View Post
    A question for all of you that have tried or are thinking about trying a grounding product.

    Did you choose to try it because you heard something you didn't like in the sound of your system or just curiosity of what might be?
    In my case at least it’s just curiosity. Probably triggered through attending a QKore demo at a trade show once.


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  27. #77

    Re: Nordost QKore grounding unit

    Quote Originally Posted by brad225 View Post
    A question for all of you that have tried or are thinking about trying a grounding product.

    Did you choose to try it because you heard something you didn't like in the sound of your system or just curiosity of what might be?
    A combination of FedEx losing my Triton v3 (finally found after 1.5 months who knows where) so needed to play with a new tweak and read so much about Tripoint and Entreq that I was curious.

  28. #78
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    Re: Nordost QKore grounding unit

    Quote Originally Posted by brad225 View Post
    A question for all of you that have tried or are thinking about trying a grounding product.

    Did you choose to try it because you heard something you didn't like in the sound of your system or just curiosity of what might be?
    I went through the demo, liked it, ordered a QKore 6 upon placement satisfied, the Nordost did as advertised - downside was the cost because you also had to add four additional cables, I think it came with 2


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  29. #79
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    Re: Nordost QKore grounding unit

    Quote Originally Posted by UltraFast69 View Post
    I went through the demo, liked it, ordered a QKore 6 upon placement satisfied, the Nordost did as advertised - downside was the cost because you also had to add four additional cables, I think it came with 2


    Sent from my iPhone using Tapatalk Pro

    +1.

    I also sat through a Nordost rep + local dealer demo of the QKORE 1, 3 & 6.

    Loved what they did to the sound. While all were impactful, for this particular demo and to my ears, the QKORE 1 was the most impressive and I plan to add one to my system later this year once all my other new stuff has settled.
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  30. #80
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    Re: Nordost QKore grounding unit

    Quote Originally Posted by Kuoppis View Post
    Hi Bill, do you remember what happened last time when you copied something from QKore product marketing materials?

    audio.bill: The first difference in their system is that it provides a method for providing an artificial clean ground point, which is described as using "Low-Voltage Attractor Plates (LVAPs), constructed with a proprietary metal alloy and a passive electronic circuit, in order to draw stray high frequency noise and voltage-generated magnetic fields to a manufactured earth point leaving a clean reference behind.

    Kuoppis: Bill, as I am not familiar with the technology, what are Low Voltage Attractor Plates, technically speaking?

    audio.bill: That was quoted from Nordost's product description and I don't have any more specific knowledge of their construction. Sorry about that.

    So, could you this time around elaborate on what exactly are artificially cleaned ground points? Thanks.

    I guess most companies invent fancy marketing names for their products and features to make them more interesting. Nevertheless, those products can sometimes be surprisingly simple. That’s why I did this experiment.
    I don't know how exact I can be, but I will attempt to share my understanding of what they are referring to by "artificially cleaned ground points". Such grounding systems generally attempt to remove noise in the ground, to lower the residual noise in the reference ground point of the system. They do so by effectively filtering the ground to remove undesired noise, but exactly how they accomplish that is not generally shared and likely considered to be proprietary. I have seen some similar products that use a ribbon or plate conductor which is connected to the ground and is immersed in a cavity filled with select rare earth elements which claim to filter noise in the ground. What Nordost refers to as low voltage attractor plates could be referring to such a conductor being used in their filter implementation. I cannot explain the science behind the reactions involved nor to the effectiveness of this type of noise filtering, but am just sharing what I've read about such designs. Nordost's implementation also provides independent clean grounds for the AC power grounds (QKORE1) and the signal grounds (QKORE3). I also found another description (likely also from other Nordost product description) which states: "the Low-Voltage Attractor Plates (LVAPs), constructed with a proprietary metal alloy and a passive electronic circuit, in order to draw stray high frequency noise and voltage-generated magnetic fields to a manufactured earth point, leaving a clean reference behind." Hopefully this additional info is helpful, but of course it doesn't explain their implementation in full detail.

  31. #81

    Re: Nordost QKore grounding unit

    Is everybody clear that there are different types of grounding - chassis, signal and mains earth?

    It seems like there's a lot of mixing of types. That copper bar hack job a few posts up is chassis grounding (as are the Tripoint products) while QKore to my knowledge seems to be signal grounding and mains earth grounding (not that it couldn't also be used for chassis grounding - similar to the CAD GC products I use). You don't use the same unit for more than one type of grounding unless it has some type of separation of grounds between the different posts on the back (which is an unusual setup, but it seems at least one of the QKore units is designed to be used for both signal and mains earth grounding at the same time).
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  32. #82

    Nordost QKore grounding unit

    Quote Originally Posted by audio.bill View Post
    I don't know how exact I can be, but I will attempt to share my understanding of what they are referring to by "artificially cleaned ground points". Such grounding systems generally attempt to remove noise in the ground, to lower the residual noise in the reference ground point of the system. They do so by effectively filtering the ground to remove undesired noise, but exactly how they accomplish that is not generally shared and likely considered to be proprietary. I have seen some similar products that use a ribbon or plate conductor which is connected to the ground and is immersed in a cavity filled with select rare earth elements which claim to filter noise in the ground. What Nordost refers to as low voltage attractor plates could be referring to such a conductor being used in their filter implementation. I cannot explain the science behind the reactions involved nor to the effectiveness of this type of noise filtering, but am just sharing what I've read about such designs. Nordost's implementation also provides independent clean grounds for the AC power grounds (QKORE1) and the signal grounds (QKORE3). I also found another description (likely also from other Nordost product description) which states: "the Low-Voltage Attractor Plates (LVAPs), constructed with a proprietary metal alloy and a passive electronic circuit, in order to draw stray high frequency noise and voltage-generated magnetic fields to a manufactured earth point, leaving a clean reference behind." Hopefully this additional info is helpful, but of course it doesn't explain their implementation in full detail.
    Thank you Bill, appreciate it. What you describe is exactly the point of the experiment.

    Most of what you cite, is marketing speak with self-invented words that could mean anything. Therefore it is not really helpful. What becomes evident from it, however, is that the QKore is a purely passive device meant to provide grounding for components. I understand that a proprietary metal alloy might be used to provide grounding, for reason or not. What an electrical circuit should achieve, in a device not being connected to a power outlet, escapes me.

    Therefore, I wanted to test what simply grounding the components to a common ground could bring. For this I chose a substantial piece of a very conducting material to connect the devices to. And it obviously achieves something.

    Therefore, I really would like to see a tear-down of the QKore to understand what actually is inside. I think one purpose of the excessive pricing is to disincentivise such attempts.

    I am not claiming my experiment does what the QKore does, because I don’t know what it does, except to provide grounding. But I even more question the cost of 5,9K w/o cables for the QKore6 in the EU. That might be pretty excessive for what it actually does, if the Nordost grounding wires are to be used as a reference.


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  33. #83

    Nordost QKore grounding unit

    Quote Originally Posted by Bar81 View Post
    Is everybody clear that there are different types of grounding - chassis, signal and mains earth?

    It seems like there's a lot of mixing of types. That copper bar hack job a few posts up is chassis grounding (as are the Tripoint products) while QKore to my knowledge seems to be signal grounding and mains earth grounding (not that it couldn't also be used for chassis grounding - similar to the CAD GC products I use). You don't use the same unit for more than one type of grounding unless it has some type of separation of grounds between the different posts on the back (which is an unusual setup, but it seems at least one of the QKore units is designed to be used for both signal and mains earth grounding at the same time).
    The copper bar is providing common ground for device signal outputs. It would be an idea to also add mains earth. But I don’t have a means to do that so far, as the AQ Niagara does not provide a ground connector similar to the Nordost power bar.

    I think the QKore6 offers signal ground and mains earth in one box, as you can also ground the power bar.


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  34. #84

    Re: Nordost QKore grounding unit

    Quote Originally Posted by Kuoppis View Post
    The copper bar is providing common ground for device signal outputs. It would be an idea to also add mains earth. But I don’t have a means to do that so far, as the AQ Niagara does not provide a ground connector similar to the Nordost power bar.
    My bad, I didn't notice the top of the picture, I remember just the bottom part of the and had assumed the top of the cable was the same - it's clearly signal ground.

    You don't need a ground connector although that helps. You can simply use a power plug end plugged into your powerstrip.

  35. #85

    Re: Nordost QKore grounding unit

    Quote Originally Posted by Bar81 View Post
    My bad, I didn't notice the top of the picture, I remember just the bottom part of the and had assumed the top of the cable was the same - it's clearly signal ground.

    You don't need a ground connector although that helps. You can simply use a power plug end plugged into your powerstrip.
    That’s what I also concluded. I will just configure a Schucko plug with only the ground connector attached.


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  36. #86

    Nordost QKore grounding unit

    All set. Added a ground-only cable from the Niagara to the CopperKore (that’s how I’m going to call it). Now I have signal and mains ground together.

    There’s definitely a WAF factor to the copper bar as well, my wife likes it. Only meaningful audio purchase so far, she contends. Except, she insists I should only buy gold bars from now on.

    Whatever the heck it does, it sounds just wonderful.




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  37. #87

    Nordost QKore grounding unit

    Color me perplexed.

    I started this CopperCore challenge a bit semi-seriously, just to challenge Nordost’s outrageous pricing for this purely passive QKore unit. I did not expect much, except a bit of fun, tongue-in-cheek. But bloody hell, this thing works. It absolutely has a tremendous impact on SQ, in respect to detail retrieval, dynamics, bass heft, structure of the music. And the impact is not at all subtle. Not at all.

    A couple of weeks back I tinkered with my system and then started to listen. But the music sounded dull, lifeless, thin, not dynamic at all. Investigating the problem I found that I had forgotten to connect the cable connecting the power amp to the CopperCore. Reconnected, problem solved, I was a bit surprised by the difference.

    Last week a friend recommended a vocal jazz album. So I bought the vinyl release (China Moses, Nightintales - posted in the vinyl thread). This time however the vinyl sounded pretty dull. First I thought the guy had recommended something that was not well recorded. But what made me wonder, is that he is also a rather committed audiophile and pretty much knows his stuff. So I checked out the digital version on Tidal, and it was great.

    The thing is, I usually like my vinyl setup. As a matter of fact, digital and vinyl, are usually both quite ok in my system. So I started pondering why the vinyl and digital versions sounded so different. The only delta I could come up with was, that while the preamp as such is grounded to the CopperCore, the vinyl ground was not.

    A bit more cable mongering and drilling, and the TT grounding was also connected to the CopperCore. Et voilà, there it was, the beautiful vinyl sound with details, dynamics, structure, great bass and all.

    To be honest, I would have never guessed this €150,- hack would one day become a critical component in my six figure system.

    Go figure Nordost QKore grounding unit.


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    Small rig: Naim UnitiServe/ Curious USB/ Tidal/ Linn Klimax DS3/ Shunyata Power cable/ Pass Labs INT-60/ Acoustic Zen Silver Reference II/ HiD Diamond 8/ Harbeth 30.2 40th Anniversary/ Shunyata Venom EU7 & Venom 3 HD.

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  38. #88
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    Re: Nordost QKore grounding unit

    Quote Originally Posted by Kuoppis View Post
    Color me perplexed.

    I started this CopperCore challenge a bit semi-seriously, just to challenge Nordost’s outrageous pricing for this purely passive QKore unit. I did not expect much, except a bit of fun, tongue-in-cheek. But bloody hell, this thing works. It absolutely has a tremendous impact on SQ, in respect to detail retrieval, dynamics, bass heft, structure of the music. And the impact is not at all subtle. Not at all.

    A couple of weeks back I tinkered with my system and then started to listen. But the music sounded dull, lifeless, thin, not dynamic at all. Investigating the problem I found that I had forgotten to connect the cable connecting the power amp to the CopperCore. Reconnected, problem solved, I was a bit surprised by the difference.

    Last week a friend recommended a vocal jazz album. So I bought the vinyl release (China Moses, Nightintales - posted in the vinyl thread). This time however the vinyl sounded pretty dull. First I thought the guy had recommended something that was not well recorded. But what made me wonder, is that he is also a rather committed audiophile and pretty much knows his stuff. So I checked out the digital version on Tidal, and it was great.

    The thing is, I usually like my vinyl setup. As a matter of fact, digital and vinyl, are usually both quite ok in my system. So I started pondering why the vinyl and digital versions sounded so different. The only delta I could come up with was, that while the preamp as such is grounded to the CopperCore, the vinyl ground was not.

    A bit more cable mongering and drilling, and the TT grounding was also connected to the CopperCore. Et voilà, there it was, the beautiful vinyl sound with details, dynamics, structure, great bass and all.

    To be honest, I would have never guessed this €150,- hack would one day become a critical component in my six figure system.

    Go figure Nordost QKore grounding unit.


    Sent from my iPad using Tapatalk
    I think your spot on.

    Now create a mechanically tuned case, some nice packaging and only include a couple of cables and charge for all additional then market the hell out it and you may just slip into the audio industry.

    Point I’m trying to make is this all starts somewhere.


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  39. #89

    Re: Nordost QKore grounding unit

    I think you’re right, that’s how it usually starts.

    But in my case the limitation is, that I do run a unit with hundreds of people in a major corporation. So my business interests lie elsewhere Nordost QKore grounding unit.
    “Life’s too short to listen to bad audio.”

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  40. #90
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    Re: Nordost QKore grounding unit

    Quote Originally Posted by Kuoppis View Post
    Hi Bill, as I am not familiar with the technology, what are Low Voltage Attractor Plates, technically speaking?


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    In the rest of the electrical world, a Low Voltage Plates eliminate the need for an electrical box where low voltage Class 2 circuits are used. Namely wall plates. Attractor plates, right !
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  41. #91
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    Re: Nordost QKore grounding unit

    Nice job Kuoppis. I'm on track to make one of those myself. So far all I have done is taken a 10 gauge military spec silver coated wire and ran it from my distribution block parallel to my power wire down into my panel. I noticed an immediate calm come over the system. It was much better then prior.

    For a while now I have heard people saying double the ground in your system. Even double the neutral. It would be something akin to your power cord having a 12 gauge on the hot and a 10 on the neutral and ground.

    If you read the grounding this ain't no joke thread by ultra-fast, you'll see I'm a little spun up myself over grounding. I posted what I find to be an interesting Mike Holt video last night. I'm going to try and drive ground rods 40 or 50 ft at my house. I would then be hoping to have a ground system such as yours tied to my ground rods via my service, using that same silver coated military-spec wire.

    I have slowly been building a new distribution power strip for my system. I bought 1/2 inch by 3/4 inch ofc copper bars. I have been Drilling and tapping them to make my power strip. I figure I could get a plate of ofc copper like you have, then drill and tap making a Connection Pointe for all the new ground leads. Thanks for doing the experimental work and validating it Work's in your setup. I have two other friends who did the similar to no effect. They did not go to a dense solid bar of copper. They went to the Earth ground in there power strips. I myself have taken ground wires from my chassis grounds to my power strip to no effect. I have heard going to the RCA's is better.

  42. #92
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    Re: Nordost QKore grounding unit

    Darn, I have no open RCA on my gear accept for my preamp. All I have is chassis grounds. I will still try grounds to a dense bar. Maybe it is also absorbing and damping micro vibrations at any frequency that is on the line. Maybe a strap works better to that affect than round wire? Hmmm.
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  43. #93
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    Re: Nordost QKore grounding unit

    Ansuz powercords have a 10mm2 (7 AWG) ground wire
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  44. #94

    Re: Nordost QKore grounding unit

    Quote Originally Posted by Kingrex View Post
    Nice job Kuoppis. I'm on track to make one of those myself. So far all I have done is taken a 10 gauge military spec silver coated wire and ran it from my distribution block parallel to my power wire down into my panel. I noticed an immediate calm come over the system. It was much better then prior.

    For a while now I have heard people saying double the ground in your system. Even double the neutral. It would be something akin to your power cord having a 12 gauge on the hot and a 10 on the neutral and ground.

    If you read the grounding this ain't no joke thread by ultra-fast, you'll see I'm a little spun up myself over grounding. I posted what I find to be an interesting Mike Holt video last night. I'm going to try and drive ground rods 40 or 50 ft at my house. I would then be hoping to have a ground system such as yours tied to my ground rods via my service, using that same silver coated military-spec wire.

    I have slowly been building a new distribution power strip for my system. I bought 1/2 inch by 3/4 inch ofc copper bars. I have been Drilling and tapping them to make my power strip. I figure I could get a plate of ofc copper like you have, then drill and tap making a Connection Pointe for all the new ground leads. Thanks for doing the experimental work and validating it Work's in your setup. I have two other friends who did the similar to no effect. They did not go to a dense solid bar of copper. They went to the Earth ground in there power strips. I myself have taken ground wires from my chassis grounds to my power strip to no effect. I have heard going to the RCA's is better.
    Cool. Will be interesting to see what you find out.

    I think it might make sense to have quite a solid grounding core. Mine is 5 Kg solid copper.


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  45. #95
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    Re: Nordost QKore grounding unit

    Quote Originally Posted by Kingrex View Post
    Darn, I have no open RCA on my gear accept for my preamp. All I have is chassis grounds. I will still try grounds to a dense bar. Maybe it is also absorbing and damping micro vibrations at any frequency that is on the line. Maybe a strap works better to that affect than round wire? Hmmm.
    Rex, parallel grounding the pre will be a significant gain


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  46. #96
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    Re: Nordost QKore grounding unit

    Hello Everyone, I am very interested in finding out what this ‘copperKore’ does. Do you still use it Kuoppis? I just wondered, how exactly do I connect the speaker wire to a) RCA and b) ethernet plug for grounding purposes?

  47. #97
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    Re: Nordost QKore grounding unit

    Quote Originally Posted by ElieD View Post
    Hello Everyone, I am very interested in finding out what this ‘copperKore’ does. Do you still use it Kuoppis? I just wondered, how exactly do I connect the speaker wire to a) RCA and b) ethernet plug for grounding purposes?
    Don’t connect it to the speaker.


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  48. #98
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    Re: Nordost QKore grounding unit

    Hello Mike, I will have to rephrase. I am not planning on grounding my speakers but Kuoppis used some speaker wire as grounding cable for his equipment. I wondered how u would connect the grounding wire ( in this case some speaker wire) to the rca plug and the ethernet plug, for grounding, technically?

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Nordost QKore grounding unit

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