• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

6aq5

  1. Carbsandcaps

    An interesting 6aq5 SE amp.

    I came across this cool looking 6aq5 single ended amp on eBay made by yellow springs instrument company of yellow springs Ohio. No info on it at all. I believe it was used with microphones. It had 800 ohm output transfomers (if it was using an 8 ohm speaker). It might make more sense to use a...
  2. happybear

    Manifesto SE ... a single ended tube amplifier project

    Manifesto SE ... a single ended tube amplifier project by HB. The physical layout is breadboard-minded, with exposed signal circuits connected to the power supply via umbilical connectors. The power supply is a LOW DCR "flywheel" type with 250VA Hammond ICT as the main B+ transformer. The...
    • happybear
    • Thread
    • 6aq5 6v6 7c5 low dcr se tube amplifier
    • Replies: 51
    • Forum: Tube Audio
  3. happybear

    SE 6AQ5 with AES PT-31 OPT

    SE 6AQ5 with AES PT-31 OPT. The OPT's are older units, not the current production. 5751 driving stage. There were some issues regarding load dependent stability while figuring out the feedback circuit. Grid stop resistors and Zobel network across OPT resolved the stability problems. RT...
Back
Top Bottom