Last Update:
TNT-AUDIO HiFi web-zine:
listening tests, articles, interviews, DIY, etc.

  Tubes, parts, accessories, books,
  magazines, tech info, etc.
  Tubes, parts, accessories, books,
  magazines, tech info, etc.
 The DIY amps on these pages are of SET (single-ended-triode) design, using genuine directly-heated power triodes (unlike some 'triode' amps that used triode-wired pentodes or beam power tubes). SET amps can produce fantastic sound (some say the best sound) using very simple circuits. They produce a mild distortion consisting of primarily even-order (mostly second-order) harmonics that tend to 'fill in' or  make the sound a little 'bigger' ; not in a 'special-effects' way, but a very natural sounding way.
 In musical terms, the second harmonic of a tone (or note) is simply a tone (or note) that's an 'octave up': The 2nd harmonic of A440 (A4) is A880 (A5). A fourth harmonic would be two octaves up. So; these even order (2nd, 4th, 6th etc.) harmonics blend in 'musically'.
   Hey; HiFi Tube Guy here,:
 Have a look around & check out the original hand-built tube stereo gear. As time allows, I plan to add much more to this site: prototyping, testing, & construction of the 'Current Project' (211/VT-4C monoblocks), etc. (a phono preamp, a 'plasma tweeter' project, and more).
 Links to just a couple of my favorite tube suppliers; there's many more 'out there'.

Tube Amps


 So, it's been 7 years, and I'm still hoping to find time soon to get back to more tube amp and horn / speaker projects, but lately I've been too busy with other fun projects, like playing drums in jam sessions with friends, while recording video to post on YouTube. Above is a couple of samples from my YouTube channel (HiFiTubeGuy). These jams are creative, spontaneous, experimental, free-style, of-the-moment... No rehearsal here... I hope you enjoy :)