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  1. #1
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    Alpha v2 NR vs Sigma v2 NR

    I am interested in any comparisons between the two power cords. Alpha v2 NR vs Sigma v2 NR

    My application would be for a line stage but all comparisons would be welcome.
    Contributor to stereotimes.com

  2. #2
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    Re: Alpha v2 NR vs Sigma v2 NR

    The Sigma v2 NR is "better" in that it will provide more "oomph" and DTCD during dynamic passages and such.

    That said, overall their tonal, timbral, and musical qualities are very, very similar.

    As such, I use a Sigma NR v2 for amps, where current delivery to speakers is key, and before I got the Lumin P1, I used an Alpha XCs for my First Sound preamp* and I still use an Alpha NR for my EAR 324 phono stage.

    If I had to standardize on one specification PC for my entire system, I'd standardize on Alpha NR v2 actually, rather Sigma, because Alpha NR v2 is a really lovely, very musical-sounding PC, perfect for preamps, phono stages, and such. While the Sigma is frickin' amazing for current delivery and "balls to the wall" power, in my small space, I find the Alpha to be, on the whole, in my room, more "musical".

    For the Lumin P1, I'm presently using a Omega QR-s PC, but that's because it's a combination streamer, DAC and preamp and the QR-s was specifically designed for sources. The Omega QR-s is actually an Alpha PC with a in-line QR/BB module, so basically, I'm still using an Alpha-spec PC for the Lumin with respect to attributes e.g. DTCD, etc.

    So, I were you, for your pre, I'd go with the Alpha NR v2, and put the cost savings into getting an Altaira. An Altaira will make MUCH more of a difference to your system than going from an Alpha NR v2 to a Sigma NRv2 for powering a preamp.

    *-the reason I don't use Alpha V2 NRs for the First Sound preamp is the First Sound already has two Shunyata CCI noise filters built into each of it's external dual-mono power supplies, so no need to use an AlphA NR PC.

  3. #3
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    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by Puma Cat View Post
    The Omega QR-s is actually an Alpha PC with a in-line QR/BB module, so basically, I'm still using an Alpha-spec PC for the Lumin with respect to attributes e.g. DTCD, etc.
    Very interesting. Thanks for sharing.
    Digital: Antipodes K30 > Shunyata Omega USB > Gustard X26pro DAC
    Amp & Speakers: Spectral DMA-150mk2 > Aerial 10T
    Foundation: Stillpoints Ultra, Shunyata Denali power conditioner, Shunyata Delta power cords, Shunyata Alpha interconnect, Shunyata Sigma Ethernet, MIT Matrix HD60 speaker cables, ASC isothermal tube traps

  4. #4
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    Re: Alpha v2 NR vs Sigma v2 NR

    I own both cables. I can't hear any difference at all. Save your money and get an Altaira. An Altaira is more important than any power cable.
    Speakers: Magico M3, ACC, S-SUB | Electronics: Esoteric Grandioso stack | Amplification: Halcro |
    Analog cables: Crystal Cable | Digital cables: Shunyata Sigma | Rack: YG Acoustics Rack 1.8
    | Source: Kaleidescape Premiere (4 x 6TB) | Power: Shunyata Typhon-QR, Everest and Denali

  5. #5
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    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by brodricj View Post
    I own both cables. I can't hear any difference at all. Save your money and get an Altaira. An Altaira is more important than any power cable.
    How is your Altaira setup? I also have both use the sigma on the amp alpha on pre and sources with an Everest. Amp plugged into the wall wondering about an Altaira. Thank you


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  6. #6
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    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by AndrewR View Post
    How is your Altaira setup? I also have both use the sigma on the amp alpha on pre and sources with an Everest. Amp plugged into the wall wondering about an Altaira...
    I have Altaira-SG. I connect the chassis grounding posts of my components to Altaira-SG. I could use another Altaira as some components share a binding post. I wanted to buy a Gemini-Model 8 as I like the dual purpose power + grounding however our local distributor is not bringing these into Australia and they won't do a special order. I have Denali and Everest grounded to Altaira. I made my own grounding cables using 10AWG teflon coated silver wire with rhodium spades.
    Speakers: Magico M3, ACC, S-SUB | Electronics: Esoteric Grandioso stack | Amplification: Halcro |
    Analog cables: Crystal Cable | Digital cables: Shunyata Sigma | Rack: YG Acoustics Rack 1.8
    | Source: Kaleidescape Premiere (4 x 6TB) | Power: Shunyata Typhon-QR, Everest and Denali

  7. #7
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    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by brodricj View Post
    I have Altaira-SG. I connect the chassis grounding posts of my components to Altaira-SG. I could use another Altaira as some components share a binding post. I wanted to buy a Gemini-Model 8 as I like the dual purpose power + grounding however our local distributor is not bringing these into Australia and they won't do a special order. I have Denali and Everest grounded to Altaira. I made my own grounding cables using 10AWG teflon coated silver wire with rhodium spades.
    Interesting forgive me is SG mostly for sources and CG amps, preamps I have to read up on their documentation.

    Generally a big improvement with the Altaira? You answered my next question re which grounding cables to use alpha / sigma by using your own. I’ve not grounded anything to the Everest to try yet imagine I’d need the Altaira for any noticeable improvement. Appreciate your help.


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  8. #8
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    Re: Alpha v2 NR vs Sigma v2 NR

    If you have an Everest, you owe it to yourself to experiment with grounding your preamp, sources etc to it. It’s a first step that can cost you nothing if you make your own ground cables. But recognize all the ground lugs of the Everest share one ‘black box’ of grounding material.

    In the Altaira, each ground lug has its own ‘black box’ and that is clearly better in my experience.
    Main Equipment: Kharma Elegance dB11-S, JL Audio F113v2 X 2, Esoteric Grandioso C1X Solo PreAmp, Bricasti M21 DAC, M32 Mono Amplifiers, Antipodes Kala K-50 Server with 4TB internal SSD
    Power: Shunyata Everest 8000, Sigma XC v2, Sigma NR v2, Alpha NR v2 PCs, Defender, ADDPowr Wizard
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  9. #9
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    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by AndrewR View Post
    Interesting forgive me is SG mostly for sources and CG amps, preamps I have to read up on their documentation.

    Generally a big improvement with the Altaira? You answered my next question re which grounding cables to use alpha / sigma by using your own. I’ve not grounded anything to the Everest to try yet imagine I’d need the Altaira for any noticeable improvement. Appreciate your help.

    Sent from my iPhone using Tapatalk
    Hey, Andrew,

    Most respectfully, none of your assumptions about which hub (SG vs CG) to use for which components, which cables to use, or about the effectiveness of using the GP-NR system of Everest are correct.

    It is very important you read ALL the Altaira information before you purchase an (or multiple, for a segmented system) Altaira hub. I can’t emphasize this point enough. Then, work with a trained dealer, e.g. Mike, to select and configure your set-up as to which type and how many hubs, and what type of cables and “tails” to buy.

    Busy at the moment, but later this morning, I’ll add some links and references for you to read as foundational material.

    Cheers! 😺

  10. #10
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    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by Puma Cat View Post
    No, your assumption about which hub (SG vs CG) to use for which components is not correct. It is very important you read ALL the Altaira information before you purchase an (or multiple, for a segmented system) Altaira hub. I can’t emphasize this point enough. Then, work with a trained dealer, e.g. Mike, to select and configure your set-up as to which type and how many hubs, and what type of cables and “tails” to buy.
    Thank you figured it would not be as simple would go through the dealer as per usual when ready running all Shunyata for power and an Everest. Richards always been helpful too.

    Do you have one and what benefits did you hear and are you using alpha/sigma grounding. Going to try grounding to Everest to a ref6se to try. Thanks for the help.


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  11. #11
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    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by AndrewR View Post
    Thank you figured it would not be as simple would go through the dealer as per usual when ready running all Shunyata for power and an Everest. Richards always been helpful too.

    Do you have one and what benefits did you hear and are you using alpha/sigma grounding. Going to try grounding to Everest to a ref6se to try. Thanks for the help.


    Sent from my iPhone using Tapatalk
    Ha! I just edited my post above to be more informative and accurate. In just a bit, I’ll get some links and background information for you to read up on. Busy presently at the moment…back in a bit.

    Cheers,
    Stephen aka PC

  12. #12
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    Re: Alpha v2 NR vs Sigma v2 NR

    Anthony,
    Here are a set of URLs to the key backgroud information describing the Altaira ground products, cables and tails.

    As mentioned above, it's really important to read all this information prior to configuring an Altaira system.

    Altaira Introduction and Overview Video: this is an important informational video; please watch it first before ordering hubs, cables, and tails.



    ALTAIRA Road Map - Shunyata Research

    Link to the Grounding products brochure: https://shunyata.com/download/22713/

    Link to the Ground Concepts Guide:
    https://shunyata.com/download/22720/

    System profile link: https://shunyata.com/download/22724/

    Hub Decision Tree:
    https://shunyata.com/download/22729/

    Component Continuity Test Sheet:
    https://shunyata.com/download/22758/

    Altaira Cable Worksheet:
    https://shunyata.com/download/22762/

  13. #13

    Re: Alpha v2 NR vs Sigma v2 NR

    What do we know about the upcoming Theta and Gamma NR cords?
    - VPI Aries 3, custom suspension & platter interface; VPI JMW 10.5i - magnetically stabilized; Ortofon Verismo; VPI SDS speed controller​. Pass XP-25 - modded & fully shielded + Tubulus umbilical
    - Magnum Dynalab MD-90SE/105
    - Spectral 4000SV
    - Spectral DMC-30SV, Spectral DMA-500AR
    - Custom MartinLogan hybrids, REL Stadium III sub - modded
    - MIT MA-X phono,90.1 speaker - shielded; Shunyata Everest, Alpha v2 NR, Sigma XC, Alpha v3 CGC
    - Isodamp, mumetal, 3M AB5100, Carbon Fiber sheets, Dynamat, Copper foil; Vishay diodes, resistors; Mundorf crossover coils & capacitors; custom electrostatic step-up transformers

  14. #14

    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by crwilli View Post
    If you have an Everest, you owe it to yourself to experiment with grounding your preamp, sources etc to it. It’s a first step that can cost you nothing if you make your own ground cables. But recognize all the ground lugs of the Everest share one ‘black box’ of grounding material.

    In the Altaira, each ground lug has its own ‘black box’ and that is clearly better in my experience.
    When I hooked up my preamp and sources to the Everest's ground lugs with Alpha cables I did hear a small but significant improvement, so I can attest to your suggestion
    - VPI Aries 3, custom suspension & platter interface; VPI JMW 10.5i - magnetically stabilized; Ortofon Verismo; VPI SDS speed controller​. Pass XP-25 - modded & fully shielded + Tubulus umbilical
    - Magnum Dynalab MD-90SE/105
    - Spectral 4000SV
    - Spectral DMC-30SV, Spectral DMA-500AR
    - Custom MartinLogan hybrids, REL Stadium III sub - modded
    - MIT MA-X phono,90.1 speaker - shielded; Shunyata Everest, Alpha v2 NR, Sigma XC, Alpha v3 CGC
    - Isodamp, mumetal, 3M AB5100, Carbon Fiber sheets, Dynamat, Copper foil; Vishay diodes, resistors; Mundorf crossover coils & capacitors; custom electrostatic step-up transformers

  15. #15
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    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by Puma Cat View Post
    Anthony,
    Here are a set of URLs to the key backgroud information describing the Altaira ground products, cables and tails.

    As mentioned above, it's really important to read all this information prior to configuring an Altaira system.

    Altaira Introduction and Overview Video: this is an important informational video; please watch it first before ordering hubs, cables, and tails.



    ALTAIRA Road Map - Shunyata Research

    Link to the Grounding products brochure: https://shunyata.com/download/22713/

    Link to the Ground Concepts Guide:
    https://shunyata.com/download/22720/

    System profile link: https://shunyata.com/download/22724/

    Hub Decision Tree:
    https://shunyata.com/download/22729/

    Component Continuity Test Sheet:
    https://shunyata.com/download/22758/

    Altaira Cable Worksheet:
    https://shunyata.com/download/22762/
    Thanks so much for this will do my homework.


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  16. #16
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    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by ack View Post
    When I hooked up my preamp and sources to the Everest's ground lugs with Alpha cables I did hear a small but significant improvement, so I can attest to your suggestion
    This is helpful do you recall which cables you used to ground? I’d like to try the same. Thank you


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  17. #17

    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by AndrewR View Post
    This is helpful do you recall which cables you used to ground? I’d like to try the same. Thank you


    Sent from my iPhone using Tapatalk
    It's in my response which you quoted - Alpha
    - VPI Aries 3, custom suspension & platter interface; VPI JMW 10.5i - magnetically stabilized; Ortofon Verismo; VPI SDS speed controller​. Pass XP-25 - modded & fully shielded + Tubulus umbilical
    - Magnum Dynalab MD-90SE/105
    - Spectral 4000SV
    - Spectral DMC-30SV, Spectral DMA-500AR
    - Custom MartinLogan hybrids, REL Stadium III sub - modded
    - MIT MA-X phono,90.1 speaker - shielded; Shunyata Everest, Alpha v2 NR, Sigma XC, Alpha v3 CGC
    - Isodamp, mumetal, 3M AB5100, Carbon Fiber sheets, Dynamat, Copper foil; Vishay diodes, resistors; Mundorf crossover coils & capacitors; custom electrostatic step-up transformers

  18. #18

    Re: Alpha v2 NR vs Sigma v2 NR

    and FWIW, I've gone Alpha v2 all around - ground, power NR, signal - with a couple of Sigma XC on the Everest and amps for the reasons stated above. It's all the speed, power and purity that I need
    - VPI Aries 3, custom suspension & platter interface; VPI JMW 10.5i - magnetically stabilized; Ortofon Verismo; VPI SDS speed controller​. Pass XP-25 - modded & fully shielded + Tubulus umbilical
    - Magnum Dynalab MD-90SE/105
    - Spectral 4000SV
    - Spectral DMC-30SV, Spectral DMA-500AR
    - Custom MartinLogan hybrids, REL Stadium III sub - modded
    - MIT MA-X phono,90.1 speaker - shielded; Shunyata Everest, Alpha v2 NR, Sigma XC, Alpha v3 CGC
    - Isodamp, mumetal, 3M AB5100, Carbon Fiber sheets, Dynamat, Copper foil; Vishay diodes, resistors; Mundorf crossover coils & capacitors; custom electrostatic step-up transformers

  19. #19
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    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by ack View Post
    and FWIW, I've gone Alpha v2 all around - ground, power NR, signal - with a couple of Sigma XC on the Everest and amps for the reasons stated above. It's all the speed, power and purity that I need
    Apologies clear as day ground lugs with alpha cables sorry. I haven’t heard much of a difference in the sigma vs alpha also, I’m mostly alpha v2 nr sigma v2 on amp and sigma XC on Everest. Curious to try to ground to the Everest to pre and source but they don’t have ground terminals I believe a screw is used.

  20. #20

    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by AndrewR View Post
    Apologies clear as day ground lugs with alpha cables sorry. I haven’t heard much of a difference in the sigma vs alpha also, I’m mostly alpha v2 nr sigma v2 on amp and sigma XC on Everest. Curious to try to ground to the Everest to pre and source but they don’t have ground terminals I believe a screw is used.
    Yes, a chassis screw is where you would attach them; I bought brass screws, copper are also available but not necessary since these STIS terminals are brass themselves
    - VPI Aries 3, custom suspension & platter interface; VPI JMW 10.5i - magnetically stabilized; Ortofon Verismo; VPI SDS speed controller​. Pass XP-25 - modded & fully shielded + Tubulus umbilical
    - Magnum Dynalab MD-90SE/105
    - Spectral 4000SV
    - Spectral DMC-30SV, Spectral DMA-500AR
    - Custom MartinLogan hybrids, REL Stadium III sub - modded
    - MIT MA-X phono,90.1 speaker - shielded; Shunyata Everest, Alpha v2 NR, Sigma XC, Alpha v3 CGC
    - Isodamp, mumetal, 3M AB5100, Carbon Fiber sheets, Dynamat, Copper foil; Vishay diodes, resistors; Mundorf crossover coils & capacitors; custom electrostatic step-up transformers

  21. #21
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    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by ack View Post
    Yes, a chassis screw is where you would attach them; I bought brass screws, copper are also available but not necessary since these STIS terminals are brass themselves
    Actually, the STIS terminals are copper.

  22. #22
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    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by AndrewR View Post
    This is helpful do you recall which cables you used to ground? I’d like to try the same. Thank you


    Sent from my iPhone using Tapatalk
    Alpha is a good level to standardize at for ground cables.

  23. #23

    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by Puma Cat View Post
    Actually, the STIS terminals are copper.
    You may not have seen the plating?
    - VPI Aries 3, custom suspension & platter interface; VPI JMW 10.5i - magnetically stabilized; Ortofon Verismo; VPI SDS speed controller​. Pass XP-25 - modded & fully shielded + Tubulus umbilical
    - Magnum Dynalab MD-90SE/105
    - Spectral 4000SV
    - Spectral DMC-30SV, Spectral DMA-500AR
    - Custom MartinLogan hybrids, REL Stadium III sub - modded
    - MIT MA-X phono,90.1 speaker - shielded; Shunyata Everest, Alpha v2 NR, Sigma XC, Alpha v3 CGC
    - Isodamp, mumetal, 3M AB5100, Carbon Fiber sheets, Dynamat, Copper foil; Vishay diodes, resistors; Mundorf crossover coils & capacitors; custom electrostatic step-up transformers

  24. #24

    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by ack View Post
    You may not have seen the plating?
    But he knows everything about Shunyata products and acts as a spokesperson for Shunyata on numerous audio forums. Surely he knows what he is talking about.
    Micro Seiki SX-8000 air bearing table, SME 312s arm, SME 3012R arn, Dynavector XV-1s cartridge, Lyra Etna SL cartridge, ARC Ref 3 phono stage, Otari MX-55 2 track R2R, Ampex 350 tape repros, Roon Nucleus Plus music server, HiFi Rose 150B DAC, ARC Ref 6, ARC Ref 75 with KT-150s, Parasound JC5 amp , JBL 4345 speakers, Viero Equilibro Level 3 speaker cables, and Definitive Technology Ref subs.

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  25. #25

    Re: Alpha v2 NR vs Sigma v2 NR

    If you want a little better performance, you can shield those TAP modules in the Alpha (and higher) interconnects with the 3M AB5100 self-adhesive material I am using everywhere, or with carbon fiber cylinders as in the Omega (but you have to buy custom cylinders).

    Here are a couple of pictures of my cables, whereby the AB5100 is also covered with TechFlex to hide the uninviting optics of the shields. In the forefront is the MIT MA-X phono cable, which has also been heavily shielded; the back of the amp also shows carbon fiber sheets being used for shielding

    cables-IMG_7210.JPG

    cables-IMG_7207.JPG
    - VPI Aries 3, custom suspension & platter interface; VPI JMW 10.5i - magnetically stabilized; Ortofon Verismo; VPI SDS speed controller​. Pass XP-25 - modded & fully shielded + Tubulus umbilical
    - Magnum Dynalab MD-90SE/105
    - Spectral 4000SV
    - Spectral DMC-30SV, Spectral DMA-500AR
    - Custom MartinLogan hybrids, REL Stadium III sub - modded
    - MIT MA-X phono,90.1 speaker - shielded; Shunyata Everest, Alpha v2 NR, Sigma XC, Alpha v3 CGC
    - Isodamp, mumetal, 3M AB5100, Carbon Fiber sheets, Dynamat, Copper foil; Vishay diodes, resistors; Mundorf crossover coils & capacitors; custom electrostatic step-up transformers

  26. #26
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    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by ack View Post
    You may not have seen the plating?
    They are gold-plated copper, but they are not brass.

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    Re: Alpha v2 NR vs Sigma v2 NR

    I just bought a pair of Delta v2 NR power cables. So now I have Sigma v2 NR, Alpha v2 NR and Delta v2 NR power cables. I've installed the Delta's on my Halcro monoblocks, replacing a pair of very old PS Audio Prelude xStream power cables which I bought in Hong Kong about 22 years ago. I was contemplating using the Delta's on my Esoteric C1X (which uses two power cables) to replace Audioquest NRG-4. But I decided on using them with the power amps because that was a one minute swap whereas the C1X power cable swap would be far more time consuming and I just don't have the motivation to go to the effort to break open a massive loom of cables behind my rack.
    Speakers: Magico M3, ACC, S-SUB | Electronics: Esoteric Grandioso stack | Amplification: Halcro |
    Analog cables: Crystal Cable | Digital cables: Shunyata Sigma | Rack: YG Acoustics Rack 1.8
    | Source: Kaleidescape Premiere (4 x 6TB) | Power: Shunyata Typhon-QR, Everest and Denali

  28. #28
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    Re: Alpha v2 NR vs Sigma v2 NR

    ...10 minutes later....

    Good grief, these Delta's absolutely smoke the PS Audio Prelude power cables! The Everest was a bit of a disappointment when I first plugged the power amps into it. I didn't hear any improvement at all. But these Delta's have yielded a much bigger improvement over Everest.
    Speakers: Magico M3, ACC, S-SUB | Electronics: Esoteric Grandioso stack | Amplification: Halcro |
    Analog cables: Crystal Cable | Digital cables: Shunyata Sigma | Rack: YG Acoustics Rack 1.8
    | Source: Kaleidescape Premiere (4 x 6TB) | Power: Shunyata Typhon-QR, Everest and Denali

  29. #29
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    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by brodricj View Post
    ...10 minutes later....

    Good grief, these Delta's absolutely smoke the PS Audio Prelude power cables!
    Funny how that works…

    You get even more improvement with Alpha NRv2 or Sigma NRv2 PCs. Especially when used with amplifiers…
    Ĥѱ = 𝐸ѱ

  30. #30
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    Re: Alpha v2 NR vs Sigma v2 NR

    I'm left to wonder what design characteristic of the Shunyata power cables brings the advantage here. I wouldn't have thought cable NR as it would only be a small fraction of the Everest NR. I wouldn't have thought DTCD as the power supplies in the power amp are so massive that any transient current delivery of a power cable would be moot in comparison. The CopperConn connectors. Maybe, but the metal in the PS Audio power cable connectors is substantial, more so than the Shunyata in terms of surface contact area. I'll try not to think about it. Maybe the Grandioso C1X would also benefit from a power cable upgrade.
    Speakers: Magico M3, ACC, S-SUB | Electronics: Esoteric Grandioso stack | Amplification: Halcro |
    Analog cables: Crystal Cable | Digital cables: Shunyata Sigma | Rack: YG Acoustics Rack 1.8
    | Source: Kaleidescape Premiere (4 x 6TB) | Power: Shunyata Typhon-QR, Everest and Denali

  31. #31
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    Re: Alpha v2 NR vs Sigma v2 NR

    Quote Originally Posted by brodricj View Post
    I'm left to wonder what design characteristic of the Shunyata power cables brings the advantage here.I'll try not to think about it.
    For amps, it’s primarily DTCD. The current delivery is a key “functional response” as we say in Six Sigma.

    For components using FWBR (Full-Wave Bridge Rectification) power supplies, the CCI-x v2 NR functionality also plays a key role.

    Maybe the Grandioso C1X would also benefit from a power cable upgrade.
    Oh, yeah…
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  32. #32
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    Re: Alpha v2 NR vs Sigma v2 NR

    well, there is a balance of how much and where you want to suppress noise.
    shunyata is a bit of a broadband-antibiotica and can sound backwards. as for usb and ethernet, i do find omega very good. regarding powercords, my recommendation would be the delta 2nr. Excellent cable, very balanced. The models above are too much of a construction.
    My favorit is to combine shunyata for front end with nordost for amplification and speakers.

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Alpha v2 NR vs Sigma v2 NR

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