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  1. shoshin

    Boris is coming...

    ... but will be late to arrive. Boris? Boris is the name of my next SET build. No, I don't normally name builds. But this one just kind of happened, inspired by a line from Snatch where Boris "the Blade" Yurinov was selling Tommy a hand gun. This build was originally intended to be a relatively...
  2. shoshin

    Occasionally, you get what you ask for

    In a positive way. 😉 Back in my a year is a long time... thread, I wished for a current production 8B/PX-25 type tube. Such a tube would have almost ideal gain and Rp (at reasonable current) for a two stage amp, either as a driver with interstage step-up to drive a low-medium power output stage...
  3. shoshin

    Test set-up - Part 1

    I'd like an amplifier test set-up that is a bit more comprehensive than a calibrated MM. Crazy, I know. For a hobbyist, it looks like there are two general areas of investigation, each requiring a specific type of set-up, though there might be some overlap. As a first priority, I'd like to be...
  4. shoshin

    A year is a long time... it is time for a project.

    A year on and I'm really happy with my last build. I'm missing building though and would like a new project. I'd like to try an all-DHT SE amp using current manufacture tubes. I don't need more than a quality 2W output; 4W would be nice. I'd also like to set up a PC-based test rig while at it...
  5. shoshin

    What happened to this tube?!

    This 2A3 ran for a month or so in my previous amp without issue. I put it in my new amp (which has only slightly high filament voltage - below the 5% tolerance) and could not adjust the hum to settle - measurements were jumping all over the place. Then I noticed the tube was not as warm as the...
  6. shoshin

    Alternative take on the Radiotron SE2A3

    Ok, it's time to get building my second amp (or fourth, depending on my perspective). Before I start posting "progress", it might help to share a little about what this thing is and the reasons for doing it. I currently own a version of the Radiotron SE2A3 posted on the JE Labs blog...
  7. shoshin

    Greetings from Brisbane, Australia.

    Hi all, I’m Ray from Brisbane, Australia. You’ve got a great place here. The exchanges are warm, supportive and involve some story-telling. My system should fit right in: DIY SE 2A3 amplifiers, GPA 604s in MLTL cabs, R2R DAC etc. I even use cables and stands and stuff. Musical tastes? Well, I...
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