A friend of mine built a tube output stage a couple of or three years ago using old radio PCBs, and it totally got my brain buzzing—I had to try it out myself. Meanwhile, I came across Pilovis’ low-voltage PL504 output stage and figured it’d be a good experiment since the plate voltage isn’t crazy high. 🙂 That’s been in the works for about a year now.
Unfortunately, Pilovis’ design didn’t really click for me, but I did get a taste of that sweet “tube sound.” Then I built an ECL86 output stage that I’m pretty happy with. It’s not perfect, but even with used radio parts it sounds decent. I put it together using Alex’s “RH universal” circuit and a switching power supply. 😉 Now I’m starting to dive into winding the output transformers…
Unfortunately, Pilovis’ design didn’t really click for me, but I did get a taste of that sweet “tube sound.” Then I built an ECL86 output stage that I’m pretty happy with. It’s not perfect, but even with used radio parts it sounds decent. I put it together using Alex’s “RH universal” circuit and a switching power supply. 😉 Now I’m starting to dive into winding the output transformers…
