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  1. Donald North
    Post

    Donald North Audio Supernaut Review and Impressions

    Just RCA inputs
    Post by: Donald North, Feb 6, 2024 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  2. Donald North
    Post

    Donald North Audio Supernaut Review and Impressions

    KT66 only
    Post by: Donald North, Jan 5, 2024 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  3. Donald North
    Post

    Donald North Audio — Owners Thread

    They aren’t identical but look OK to use
    Post by: Donald North, Jan 5, 2024 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  4. Donald North
    Post

    Donald North Audio — Owners Thread

    After further research and testing with the Supernaut (which uses a directly heated rectifier powering indirectly heated signal tubes), it should...
    Post by: Donald North, Dec 31, 2023 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  5. Donald North
    Post

    Donald North Audio Supernaut Review and Impressions

    Enjoy the KT66
    Post by: Donald North, Dec 24, 2023 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  6. Donald North
    Post

    Donald North Audio — Owners Thread

    They look like they’re made in China - Psvane perhaps?
    Post by: Donald North, Dec 22, 2023 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  7. Donald North
    Post

    Donald North Audio — Owners Thread

    That PDF says the Shuguang factory was closed and they’ve teamed up with a new partner for the new Red Base line.
    Post by: Donald North, Dec 22, 2023 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  8. Donald North
    Post

    Donald North Audio Supernaut Review and Impressions

    The KT66 makes for a fantastic triode and to me has sonic qualities similar to a DHT.
    Post by: Donald North, Dec 20, 2023 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  9. Donald North
    Post

    Donald North Audio — Owners Thread

    My favs have been vintage Sylvania dual flat rectangular plates, but quite frankly, I now prefer the Psvane Acme 2A3s. Curious to try the Takatsukis.
    Post by: Donald North, Nov 29, 2023 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  10. Donald North
    Post

    Donald North Audio — Owners Thread

    I still use their SFCD1 - love its sound but the laser is starting to occasionally skip again. I’ve tried vintage Cunningham 2A3 monoplates in my...
    Post by: Donald North, Nov 29, 2023 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  11. Donald North
    Post

    Donald North Audio — Owners Thread

    I need to finalize a couple aspects of the design, hopefully by Jan. From there get parts on order.
    Post by: Donald North, Nov 28, 2023 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  12. Donald North
    Post

    Donald North Audio — Owners Thread

    You may also want to try the Tube Amp Doctor (TAD) 5U4G available through tubedepot.com. Sounds very good in the Supernaut proto.
    Post by: Donald North, Nov 28, 2023 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  13. Donald North
    Post

    Donald North Audio — Owners Thread

    For that power entry module with the illuminated green power switch, you need to squeeze together the 2 plastic tabs of the fuse holder and pry...
    Post by: Donald North, Sep 21, 2023 in forum: Headphone Amplifiers and Combo (DAC/Amp) Units
  14. Donald North
    Post

    Sonic Frontiers SFD-1 MK2 Vintage DAC Measurements

    Been enjoying for 20+ years their SFCD-1 tube cd player using the same DAC chip
    Post by: Donald North, Sep 14, 2023 in forum: Source Measurements
  15. Donald North
    Post

    What are you drinking RIGHT NOW?

    Pepper blossom recipe in link https://denver.eater.com/2012/4/6/6598567/heat-things-up-with-st-germain
    Post by: Donald North, Jul 17, 2023 in forum: Food and Drink
  16. Donald North
    Post

    What are you drinking RIGHT NOW?

    What’s the drink’s name?
    Post by: Donald North, Jul 16, 2023 in forum: Food and Drink
  17. Donald North
    Post

    A Rethink of THD/THD+N (or why both tell us almost nothing)

    They shi Are you familiar with the BBE Sonic Maximizer? It’s adds phase shift and group delay with decreasing frequency....
    Post by: Donald North, Feb 28, 2023 in forum: Audio Science
  18. Donald North
    Post

    A Rethink of THD/THD+N (or why both tell us almost nothing)

    It’s always funny to me how many people focus on the measured attributes of amplifiers like distortion and phase/square wave response yet ignore...
    Post by: Donald North, Feb 27, 2023 in forum: Audio Science
  19. Donald North
    Post

    Concerts and Live Music!

    This thread needs to be more active. There’s great live music happening everywhere. One of the perks living in SoCal is everyone plays somewhere...
    Post by: Donald North, Jan 15, 2023 in forum: Music and Recordings
  20. Donald North
    Post

    Concerts and Live Music!

    Anyone who loves Led Zeppelin should check these guys out: Zoso Played for 2 hours last night [ATTACH] Playing San Diego tonight They...
    Post by: Donald North, Jan 15, 2023 in forum: Music and Recordings
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