I really like your rub-on suggestion, if you could explain the process a bit more.
Off-topic:
As for my amplifiers (I am not an expert in the field), i would not dare to go over 10W per channel, since the old speakers(10W old EI Niš) that i have would blow. First i tried with AD161 transistors, as i don't like to make things from schematics(kida cheating), i went to thinker, but i just couldn't get them to work on full power. As for ic, my friend is kinda obsessed with TDA ic, and i can't count anymore how much times they have blown up in his amplifier. At the end i found an old radio on my attic, and i took it apart, and i built a simple amplifier with the EL84 tube, and it just worked, after that, i took apart another radio(all of them being from EI Niš) and i took the transformers, and the rectifying tube. In no time i had a new amplifier built from old components, and it's been almost 2 years, and i use it almost 24/7 and it still works. But EL84 tubes in single ended mode don't offer much power, so i went and bought EL34 tubes, transformers, i recently bought two fancy vu meters, i just need to figure out the chassis and put it all together, also i will try not to make some mistakes that i made in the current version.
Before I've went into building amps, i had a simple amp that i built with AC187 transistors for my headphones, and when listening to music from my pc sound card, it would generate a sort of richer sound, until one day i accidentally made a short circuit, and blew all the transistors...
Since i am building a sound module(i plan to) for my sbc, i was planning to add a small preamp, but i haven't decided how should i build it, should i use germanium(fancy
), silicon, or just put an lm386...