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  1. Puma Cat

    Shunyata Grounding System

    "All good things come to those who wait." From the poem, Tout vient a qui sait attendre, Lady Montgomery
  2. Puma Cat

    Shunyata Grounding System

    Yes, that's correct. The standard guidance is to use a CG hub if you're going to install a single Altaira for an entire system. For example, for your specific setup, the standard recommendation would be to use a CG hub. And, you can still make connections for interfaces, e.g. unused RCA or XLR...
  3. Puma Cat

    Re-imagining "Class A" Amplification

    Agreed, Gary. My apologies for the digression. Back to the subject at hand. Cheers.
  4. Puma Cat

    Re-imagining "Class A" Amplification

    It shouldn't take...a year, though, Gary. Cheers.
  5. Puma Cat

    Re-imagining "Class A" Amplification

    Simply stating a fact. As for "what business it is" of anyone's, it's completely reasonable that potential customers should know with accuracy what the lead time from placing their order to taking delivery is actually going be, especially, as you've just stated, that product demand may impact...
  6. Puma Cat

    Shunyata Grounding System

    Yes, you can make both "chassis ground" and "signal ground" connections using an SG hub. This is what I use in my dual-mono configuration for my Constellation integrated. My point was that making a "chassis ground" connection, if that's possible, should be the "primary" connection to Altaira...
  7. Puma Cat

    Re-imagining "Class A" Amplification

    Well, at least Cyrus got his Clarisys speakers. I know someone who placed an order over a year ago, at last year's AXPONA, and has yet to receive them. I agree Angus is a brilliant electronics engineer.
  8. Puma Cat

    Shunyata Grounding System

    Richard would also advise customers to read the comprehensive Altaira (and Gemini) instructional information on system and connection configuration, FIRST. This is really important.
  9. Puma Cat

    Shunyata Grounding System

    Use the chassis screw. Again, if possible, the primary connection should be to a dedicated chassis ground terminal or chassis fastener. If your component's "grounding implementation" does not support making a connection to chassis ground using a ground post or chassis screw/fastener, then use...
  10. Puma Cat

    Shunyata Grounding System

    Whenever possible, the PRIMARY connection to "ground" (e.g. an Altaira) is using a "dedicated chassis ground" post or chassis fastener that conects to chassis ground as the recommended implementation, particularly if using CG hub. The guidance is that it if a connecton from a chassis fastener or...
  11. Puma Cat

    Power Cable Lifts/Risers, etc.

    Those are really cool, Mark, makes for a much tidier dressing of the cables. Thanks for sharing.
  12. Puma Cat

    Re-imagining "Class A" Amplification

    I met Angus last year at AXPONA, on the very first day, when he and Nelson Choi were setting up the Lumin room, and we had a very interesting discussion about audio component design. IIRC, Angus also designed Lumin's amplifier, apppropriately named, "Amp". Would love to review that someday for...
  13. Puma Cat

    Core Audio Racks Arrive

    Recently recieived my Core Audio racks from Core Audio founder and craftsman, Arnold Marr. Here's some info on these superb audio racks, crafted by hand: PlyKraft Platform The new plyKraft platform is composed of domestic high density FSC & CARB certified Apple-Ply. The massive 2” Apple-Ply...
  14. Puma Cat

    Shunyata Grounding System

    Just trying to help out. Cheers and have a nice day.
  15. Puma Cat

    Shunyata Grounding System

    The Denali 6000v2 Specifications table specifies there are 6 zones of isolation on the Denali 6000 v2. This is also unambiguously specified on the Denali 6000v2 product web page: https://shorturl.at/gnIO7 "Design advances within include objectively lowered noise, 6 zones of isolation and...
  16. Puma Cat

    Shunyata Grounding System

    Zeotrope and the Shunyata roadmap is correct. If the IEC receptacle only has two prongs, and no "ground pin", then you should not connect that device to an Altaira or Gemini ground terminal. The Altaira "roadmap" was written for a reason, so that end-users can determine if, and if they can, then...
  17. Puma Cat

    My First Sound Presence Deluxe III-Si 4.0 preamp with Paramount Special Edition upgrade

    No worries. Those who know what this preamp is, how beautifully designed, engineered, and crafted it is, and how capable it is in providing a beguiling and engaging musical experience...know. And, ultimately, isn't that what it's all about? Cheers, and as Hans Beekhuizen says..."Enjoy the...
  18. Puma Cat

    My First Sound Presence Deluxe III-Si 4.0 preamp with Paramount Special Edition upgrade

    None of those preamps are of the same model, nor the same level of engineering specification, of the First Sound preamplifier I'm selling. Those are older models and have only a single external power supply. Moreover, the last model listed is a passive preamp, so it's not pertinent to the...
  19. Puma Cat

    My First Sound Presence Deluxe III-Si 4.0 preamp with Paramount Special Edition upgrade

    It's an incredible preamp, the best I've ever heard. And, no, there are not a lot of them for sale on the used market. In point of fact, you hardly ever see them up for sale, and the reason is because their owners, like Bob, are very happy with them. Those who know....know. Thanks for the...
  20. Puma Cat

    My First Sound Presence Deluxe III-Si 4.0 preamp with Paramount Special Edition upgrade

    It's very common behavior on male-dominated internet forums. We've all encountered it before, as you know, Bob. And, it doesn't matter if it's audio gear, cameras, sport bikes, sports cars...it's all the same behavior. If you stated "f=ma", some guy will give you an argument about it. I just...
  21. Puma Cat

    Can a Linear Power Supply Inject Noise Into its AC Circuit?

    My hypothesis is #2 would. But, why not "be like a scientist" and do a "controlled experiment" to find out? Try both, and listen for what sounds best. Whatever you like best...go with that.
  22. Puma Cat

    Can a Linear Power Supply Inject Noise Into its AC Circuit?

    and Thanks, gents, excellent information. I'm going to read through this info as well. More data for the "database" is always a good thing. Cheers.
  23. Puma Cat

    Can a Linear Power Supply Inject Noise Into its AC Circuit?

    I think it’s important to understand that not just the LPS for digital-domain devices, but the power supplies inside our “analog” amplification components themselves can, and usually do, contribute a significant amount of noise to our stereo systems. A principal contributor of noise are the...
  24. Puma Cat

    My First Sound Presence Deluxe III-Si 4.0 preamp with Paramount Special Edition upgrade

    Yes. A friend let me audition his for a couple months in my own system before I bought mine. It was that experience that led me to decide to buy one.
  25. Puma Cat

    My First Sound Presence Deluxe III-Si 4.0 preamp with Paramount Special Edition upgrade

    Normally, I would never part with mine, but I've just gotten to a place where I really need to have the simplest system set-up possible. Part of this is due to the challenges I had with other components (e.g. my SOtM network bridge) that I was using in my system at the time and my network, where...
  26. Puma Cat

    My First Sound Presence Deluxe III-Si 4.0 preamp with Paramount Special Edition upgrade

    Yes, that is absolutely correct. Just a wonderful person of high integrity.
  27. Puma Cat

    My First Sound Presence Deluxe III-Si 4.0 preamp with Paramount Special Edition upgrade

    I think my First Sound is the finest standalone preamp I've ever heard. I agree they are an end-game preamp. That said, I also plan on selling mine, as I recently bought a really nice integrated amp, and I'm going to stay with that. It just allows for a much simpler set-up. I only need one PC...
  28. Puma Cat

    Amp Stand for Heavy Amp on Wood Floor?

    Herbie's Audio Labs Threaded Stud Gliders: https://herbiesaudiolab.com/collections/loudspeaker-rack-decoupling-and-isolation/products/threaded-stud-glider?variant=12651505745975
  29. Puma Cat

    Using Design of Experiments for Subwoofer Set-up and integration

    One of the really powerful things about DOEs, is you can build a good model, it can be use to show the "response" of the measurement(s) under study. Now, most folks are just taught in school about fairly simple approaches to characterizing a response, e.g. using a linear regression, where the...
  30. Puma Cat

    Using Design of Experiments for Subwoofer Set-up and integration

    The nice thing about using DOEs is, it's takes the guesswork out of optimizing a system. You literally obtain F-statistics and p-values that specify how accurately the DOE model "explains" the entirety of the measurement data for your system under experimentation. In statistics, we generally set...

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