• 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

5-20

  1. thorpej

    All-Purpose Stereo 5-20 front-end PCB

    In my day job, computer software is my thing, and one thing that really irks me in that discipline is having to do one-offs. Even worse, a one-off that's really similar, but ever so slightly different, to the previous one-off. When that happens, I like to take the time to refactor the code and...
  2. thorpej

    Bootstrapped Mullard 5-20-style front end

    Spent some time tonight fiddling around with my idea for a bootstrapped Mullard 5-20-style front end (AF gain + inverter stages) for a 6550 U-L amp. The simulation behaved more or less exactly as I expected it to (modulo my triode models not liking a CCS in the inverter tail for whatever...
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