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  1. #1

    Shunyata Sigma NR v2 power cord

    The new Sigma NR v2 power cord is near the top of the line of the new Reference Series of NR power cords from Shunyata Research.

    The new Reference Series power cords have all new VTX-Ag conductors, CopperCONN connectors, and Shunyata's latest NR noise-reduction technology that significantly reduces noise coming from the component's power supply and going back into the power distribution chain to potentially contaminate other componentry. They are primarily designed to be used for powering components in conjunction with a power distributor, but they can also be used to provide NR for components powered directly from the wall's AC receptacle, e.g. monoblocks or amps that are too far from the location of a central power distributor.

    I've had the opportunity to beta test the new Sigma NR v2 power cord for the last few weeks prior to its release on April 3, and for the first application, I installed a single power cord to power my Denali 6000/S V2.



    From the first moment I turned on the stereo using this power cord, I was...gobsmacked. I've heard some really good power cords in the last 10 years, but in all honesty, I've never heard a single power cord not only bring such a DEGREE of improvement, but also NATURE of improvement, as well.

    The new Sigma NR v2 PC brings the type and nature of presentation that I've only experienced from Shunyata devices that have the QR/BB technology. If you've never experienced what a Triton V3, Typhon QR, Denali, etc. brings to the equation, all I can say is that the classic audiophile terminology we've used for the last 40 years simply does not apply any more. Put quite simply, you have to experience it to "get it".

    Most of my experiences with great power cords to this point have resulted in a notable reduction in noise, hash, grunge and a concomitant increase in dynamics, slam, ability to scale incredibly quickly without "compression" and resultant improvements in transparency and resolution. Over the years, I've come to the conclusion that power cords are the most important cables in a high-end system for this reason, and, along with the power distributor, should be the first key purchases of a stereo system to provide clean, quiet, and un-restricted power rather than the final "tweak" of a stereo system. You don't build a superb house on a weak foundation, you build it on the best foundation you can for sound (no pun intended) engineering reasons, and the power distribution of a high-end audio system is no different.

    But coming back to the Sigma NR v2....

    The first time I head this power cord it was immediately apparent that all the adjectives used in audio reviews for this type of product don't apply. The performance and qualities this power cord brings require a new vocabulary as as well as a new perspective because the nature of the presentation is so fundamentally changed.

    If there was just one word I was limited to for describing what the Shunyata NR v2 brings its...Verisimilitude.

    Def: Verisimilitude – the appearance of being true or real.

    There is realness and authencity that this power cord brings that, quite simply, I've never experienced before. Yes, its got all those audiophile adjectives I've referenced above: notable reduction in noise, hash, grunge and a concomitant increase in dynamics, slam, ability to scale incredibly quickly...yadda, yadda. Yep, its got all that stuff in spades.

    But, it has other, more compelling attributes, as well. The Sigma NR v2 provides a very 3D-like simulacrum of the musical presentation that is the most holographic, dimensional, pin-point precise I've experienced. While its sounds amazing on all types of content, on full-scale classical symphonic music, you can really hear what the Sigma NR v2 can do.

    Listening to Pepe Romero's classical guitar on Rodrigo's Concerto de Aranjuez by Romero and the Academy of St Martin in the Fields, you can hear the thickness of the spruce top of Romero's guitar. Moreover, you can clearly hear the individual notes, and the subtlety of the notes he is playing completely clearly and fully resolved even with the complexity and scale the full orchestra is going flat-out during a very dynamic passage. You can actually "zero in" with your hearing to every single instrument in the orchestra, and hear what that specific musician is playing within the context of the symphony overall. Normally, during these types of passages, these small and "intricate" details get lost against the background of the entire symphony playing en-masse. Not with the Sigma NR v2.

    The Sigma NR v2 provides a type of "resolution" that quite simply, I've not experienced before. The orchestra can swing incredibly quickly and forcefully from soft to loud and you can still pointpoint and hear "into" each individual musician or instrumental voice. On Midnight Blue, I can hear the secondary reflection of Kenny Burrell's guitar, which is miked on the left, splay off the far right wall in the recording studio, for example.

    The imaging is also notably improved as well, each musician or instrument being more focused, "palpable'..there's more "meat on the bones" of each instrument, more texture, more timbral accuracy and timbral nuance.

    I could go on and on, but to conclude, there is so much more focus, ambiance, rightness to the presentation that it moves from clean, fast and technical (there's all that, those audiophile attributes, to be sure, but much more) to such a natural and "organic" quality that it sounds as if you are in the room with the musicians as they create the music that instant. Analogies again fail here but if I had to make them its like going from an Apple iTunes track to listening to the recording's orignal master tapes set up by Alan Yoshida and played back on a world-class Studer reel-to-reel tape deck. Or like looking at a JPEG from a good APS-C camera to a 16-bit TIFF file from a 100 megapixel Fuji GFX100 medium-format camera in Capture One Pro 20.

    Really extraordinary.

  2. #2
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    Re: Shunyata Sigma NR v2 power cord

    Didn't you prefer Sigma XC for Denali?
    Francisco.
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  3. #3

    Re: Shunyata Sigma NR v2 power cord

    Quote Originally Posted by nonesup View Post
    Didn't you prefer Sigma XC for Denali?
    Yes, the Sigma XC is better suited as power cord for power distributors.

    But, when I started beta testing the Sigma NR v2, the XC was not in production.

    So, I first tested the Sigma NR v2 using it for powering a power distributor.

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    Re: Shunyata Sigma NR v2 power cord

    Well I hope so, I ordered an XC
    Francisco.
    Aries Cerat Kassandra Ref. MKII / Melco N1ZH60-2 / Audio Research Ref. 5 SE / Constellation Inspiration 1.0 Estéreo / Rockport Atria I / Göbel XLR and RCA cables / Göbel Ethernet and USB cables / MIT Magnum MA Speakers cables / Shunyata Everest 8000 / Shunyata Omega XC, Sigma NR V1 (3) and Alfa NR V1 (2) / Paul Hynes SR7T for Melco S-100 Pink Faun Upgraded / Farad Super3 for IPS Modem-Router / Entreq Olympus Infinity (4) / Entreq Eartha Olympus Infinity Cables (8) / Entreq Everest (8).


  5. #5

    Re: Shunyata Sigma NR v2 power cord

    Quote Originally Posted by nonesup View Post
    Well I hope so, I ordered an XC
    You will be very happy with it. It's wonderful, perfect for a power distributor.

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    Re: Shunyata Sigma NR v2 power cord

    Would you say that Alpha NR V2 is roughly performance equivalent to the superseded Sigma NR?
    Speakers: Magico M3, Q3, ACC, S-SUB | Electronics: Esoteric Grandioso | Amplification: Halcro |
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    and YG Acoustics Rack 1.1 amp stands (pair)

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    Re: Shunyata Sigma NR v2 power cord

    Quote Originally Posted by brodricj View Post
    Would you say that Alpha NR V2 is roughly performance equivalent to the superseded Sigma NR?
    Better. More linear. More air. More detail.


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    Re: Shunyata Sigma NR v2 power cord

    So Alpha NR v2 would be the preferred choice over Sigma NR, and cheaper too?
    Speakers: Magico M3, Q3, ACC, S-SUB | Electronics: Esoteric Grandioso | Amplification: Halcro |
    Analog cables: Crystal Cable | Digital cables: Shunyata Sigma | Rack: YG Acoustics Rack 1.4
    and YG Acoustics Rack 1.1 amp stands (pair)

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    Re: Shunyata Sigma NR v2 power cord

    Quote Originally Posted by brodricj View Post
    So Alpha NR v2 would be the preferred choice over Sigma NR, and cheaper too?
    IMO, yes.


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    Re: Shunyata Sigma NR v2 power cord

    Thanks for sharing. This post makes me want to buy one to try
    Adam

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    Re: Shunyata Sigma NR v2 power cord

    i have a sigma NR v2 in on demo, powering an everest (also on demo). while the system does some things *very* well, i fell the top end is rolled off, and i'm losing some detail / air on upper octave harmonics.

    is this the effect of the NR in the wrong spot? i know Shunyata rec's the XC series for its power distributors, but the dealer only had NR on hand.

    thanks for any input.
    Jays CD3Mk 2 > SMSL M400 (try it)
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    Re: Shunyata Sigma NR v2 power cord

    Quote Originally Posted by rhyno View Post
    i have a sigma NR v2 in on demo, powering an everest (also on demo). while the system does some things *very* well, i fell the top end is rolled off, and i'm losing some detail / air on upper octave harmonics.

    is this the effect of the NR in the wrong spot? i know Shunyata rec's the XC series for its power distributors, but the dealer only had NR on hand.

    thanks for any input.
    You are supposed to use Sigma XC to power the Everest. Not the NR. Basically, XC for power distributors (like the Everest), and the NR for components
    B&W 803 D3 | T+A PA 3100 HV | Esoteric N-01XD | Esoteric P-05X | Shunyata Sigma v2 & Alpha v2 | Shunyata Everest

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    Re: Shunyata Sigma NR v2 power cord

    Quote Originally Posted by thyname View Post
    You are supposed to use Sigma XC to power the Everest. Not the NR. Basically, XC for power distributors (like the Everest), and the NR for components
    Agreed. A good dealer would have told him that. Shunyata Sigma NR v2 power cord


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    Re: Shunyata Sigma NR v2 power cord

    So, I own a Niagara 7000 power conditioner. Which I like very much.
    I was thinking of getting a Sigma V2 NR to power it. But now I wonder if the Sigma XC would be the better choice.
    Any help for my decision would be appreciated.

    ozzy

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    Re: Shunyata Sigma NR v2 power cord

    Quote Originally Posted by ozzy View Post
    So, I own a Niagara 7000 power conditioner. Which I like very much.
    I was thinking of getting a Sigma V2 NR to power it. But now I wonder if the Sigma XC would be the better choice.
    Any help for my decision would be appreciated.

    ozzy
    Very easy: Basically, XC for power distributors, and the NR for components. So, Sigma v2 XC for your Niagara
    B&W 803 D3 | T+A PA 3100 HV | Esoteric N-01XD | Esoteric P-05X | Shunyata Sigma v2 & Alpha v2 | Shunyata Everest

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    Re: Shunyata Sigma NR v2 power cord

    Or, the AQ Dragon with the Niagara would also be a nice option.
    _______________

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    Re: Shunyata Sigma NR v2 power cord

    Quote Originally Posted by ozzy View Post
    So, I own a Niagara 7000 power conditioner. Which I like very much.
    I was thinking of getting a Sigma V2 NR to power it. But now I wonder if the Sigma XC would be the better choice.
    Any help for my decision would be appreciated.

    ozzy

    I have Everest + Omega XC. If I had Niagara 7000 I would PM Mike before buying a Shunyata cable to power the Niagara.
    Francisco.
    Aries Cerat Kassandra Ref. MKII / Melco N1ZH60-2 / Audio Research Ref. 5 SE / Constellation Inspiration 1.0 Estéreo / Rockport Atria I / Göbel XLR and RCA cables / Göbel Ethernet and USB cables / MIT Magnum MA Speakers cables / Shunyata Everest 8000 / Shunyata Omega XC, Sigma NR V1 (3) and Alfa NR V1 (2) / Paul Hynes SR7T for Melco S-100 Pink Faun Upgraded / Farad Super3 for IPS Modem-Router / Entreq Olympus Infinity (4) / Entreq Eartha Olympus Infinity Cables (8) / Entreq Everest (8).


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    Re: Shunyata Sigma NR v2 power cord

    Thanks for the replies. I was not sure about different power conditioners using the XC version.

    ozzy

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    Re: Shunyata Sigma NR v2 power cord

    Ritmo,
    I thought about the Dragon. It is pretty expensive and I do like my Shunyata Sigma V2 interconnects.

    ozzy

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    Re: Shunyata Sigma NR v2 power cord

    the cord from the wall to the distributor is the most important cable in your system. you cannot go wrong using the same mfg for the cable as the distributor (i tried diff brand cords into the everest; they didn't work as well as the sigma NR, which was still the wrong cord )
    Jays CD3Mk 2 > SMSL M400 (try it)
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    Re: Shunyata Sigma NR v2 power cord

    rhyno,
    I hear ya, but I did try the Hurricane with Niagara and wasn't impressed.

    ozzy

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    Re: Shunyata Sigma NR v2 power cord

    Ultimately it's your choice. I've had different power distributors during the years. Furutech and Shunyata are the household names here.

    I would probably get a Sigma XC regardless off the power distributor manufacturer. If you later come around to the Denali or Everest you have everything setup perfectly for your system transition. (Shunyata uses C19 IEC's though so other manufacturers might need an adapter unless you are custom ordering it with C15 IEC).

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    Re: Shunyata Sigma NR v2 power cord

    Crion,

    Yes I think I will center on getting the Shunyata Sigma XC. I may someday trial a Everest so it would be good to have.
    Now to rob a bank...

    ozzy

  24. #24

    Re: Shunyata Sigma NR v2 power cord

    Quote Originally Posted by ozzy View Post
    rhyno,
    I hear ya, but I did try the Hurricane with Niagara and wasn't impressed.

    ozzy

    Try a Firebird HC.

    The added silver in Firebird will be an improvement over Hurricane HC.

    Sigma XC uses the new conductor with silver in it.

    Probably compares better to Firebird

    I'm not a fan of mixing and matching brands.

    If you have a Niagara stick with AQ.

    But, if you have plans to change to a Shunyata distributor in the future.

    Then consider a Sigma XC.

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    Re: Shunyata Sigma NR v2 power cord

    ozzy, if youre sticking w the niagra, find a way to demo the dragon. i've one in at present and it is awesome. (using it to power a custom-built distribution box). quiet, extended, and dynamic AF.
    Jays CD3Mk 2 > SMSL M400 (try it)
    Luxman C900 + stillpoint minis
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  26. #26
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    Re: Shunyata Sigma NR v2 power cord

    Quote Originally Posted by ozzy View Post
    Ritmo,
    I thought about the Dragon. It is pretty expensive and I do like my Shunyata Sigma V2 interconnects.

    ozzy
    My entire system uses Shunyata power cables so I’m a big fan of this company. I recommended the AQ Dragon since it is a stellar cable and the conditioner is an AQ. And, yes, the Dragon is pricey but it’s exceptional.

    If replacing the AQ N 7000 was a consideration, Shunyata Everest with Sigma 2 XC or Omega would be my choice.
    _______________

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    Re: Shunyata Sigma NR v2 power cord

    strangely i'm demoing both the sigma XC and the dragon. after the swap, i'd offer the following:
    dragon is more dynamic, better air. sigma slightly warmer with blacker backgrounds but at the expense of being slightly closed in up top.

    if i was listening to shit digital, sigma would be preferred.
    if everything upstream is up to snuff, dragon.

    if cost was the same, i'd go dragon. if its $4k difference to you is a personal matter

    (i'm listening to sigma XC with grateful dead @ 1970 live disc, its a wonderful cord from the wall, and with none of the reservations i had about the NR version, which was poorly suited for this application.)
    Jays CD3Mk 2 > SMSL M400 (try it)
    Luxman C900 + stillpoint minis
    Luxman M900 + stillpoint 5s
    Magico S7s on townshend stands
    Custom ICs / AC from TG Audio, AQ Wild Speaker Cable
    AC: PS Audio PS 10 + ADD Powr Wizard + Akiko Corelli + HF MC1Pro(2)
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    Re: Shunyata Sigma NR v2 power cord

    Rhyno, are you listening on the Sigma XC with an adaptor? What PD was used?

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    Re: Shunyata Sigma NR v2 power cord

    no adapter. using a custom box, the closest equivalent is the $1200 furutech GTO-D2.
    will try both on the everest later this week as time permits.
    Jays CD3Mk 2 > SMSL M400 (try it)
    Luxman C900 + stillpoint minis
    Luxman M900 + stillpoint 5s
    Magico S7s on townshend stands
    Custom ICs / AC from TG Audio, AQ Wild Speaker Cable
    AC: PS Audio PS 10 + ADD Powr Wizard + Akiko Corelli + HF MC1Pro(2)
    Tube traps

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    Re: Shunyata Sigma NR v2 power cord

    Alright cool, will you swap in the Everest where the faux-GTO-D2 is today?

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    Re: Shunyata Sigma NR v2 power cord

    Hi Caelin.
    If you had your DAC (AC Kassandra) and your Amplifier (Constellation Inspirarion 1.0) both with Sigma V1 power cables and you could only change one of them to Sigma V2, which would you change?
    Francisco.
    Aries Cerat Kassandra Ref. MKII / Melco N1ZH60-2 / Audio Research Ref. 5 SE / Constellation Inspiration 1.0 Estéreo / Rockport Atria I / Göbel XLR and RCA cables / Göbel Ethernet and USB cables / MIT Magnum MA Speakers cables / Shunyata Everest 8000 / Shunyata Omega XC, Sigma NR V1 (3) and Alfa NR V1 (2) / Paul Hynes SR7T for Melco S-100 Pink Faun Upgraded / Farad Super3 for IPS Modem-Router / Entreq Olympus Infinity (4) / Entreq Eartha Olympus Infinity Cables (8) / Entreq Everest (8).


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    Re: Shunyata Sigma NR v2 power cord

    Quote Originally Posted by nonesup View Post
    Hi Caelin.
    If you had your DAC (AC Kassandra) and your Amplifier (Constellation Inspirarion 1.0) both with Sigma V1 power cables and you could only change one of them to Sigma V2, which would you change?
    Why not try it on each piece of gear, and keep it on the one that sounds best?
    Bud

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    Re: Shunyata Sigma NR v2 power cord

    Obviously that is easy to do and in principle it seems that the Amplifier would be the chosen one, but I would like to know Caelin's opinion
    Francisco.
    Aries Cerat Kassandra Ref. MKII / Melco N1ZH60-2 / Audio Research Ref. 5 SE / Constellation Inspiration 1.0 Estéreo / Rockport Atria I / Göbel XLR and RCA cables / Göbel Ethernet and USB cables / MIT Magnum MA Speakers cables / Shunyata Everest 8000 / Shunyata Omega XC, Sigma NR V1 (3) and Alfa NR V1 (2) / Paul Hynes SR7T for Melco S-100 Pink Faun Upgraded / Farad Super3 for IPS Modem-Router / Entreq Olympus Infinity (4) / Entreq Eartha Olympus Infinity Cables (8) / Entreq Everest (8).


  34. #34
    Senior Member
    Join Date
    Aug 2014
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    beautiful winter
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    623

    Re: Shunyata Sigma NR v2 power cord

    i d place it on the dac and think caelin would choose the amp.

  35. #35
    Senior Member
    Join Date
    Mar 2014
    Location
    USA Michigan
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    128

    Re: Shunyata Sigma NR v2 power cord

    Thanks for all the help! Albeit I am still confused. Dragon. Firebird or the Sigma XC with the Audioquest 7000?.

    ozzy

  36. #36

    Re: Shunyata Sigma NR v2 power cord

    Quote Originally Posted by u-sound View Post
    i d place it on the dac and think caelin would choose the amp.
    I'd recommend on the amp, as well.

  37. #37
    Senior Member
    Join Date
    Dec 2013
    Location
    WA, USA
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    394

    Re: Shunyata Sigma NR v2 power cord

    Kassandra (great DAC BTW)
    Caelin Gabriel
    President
    Shunyata Research

    http://shunyata.com

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Shunyata Sigma NR v2 power cord

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