Last Update:
5-21-09
Locations of visitors to this page
Cool Tube Amps
Tube Depot
  Tubes, parts, accessories, books,
  magazines, tech info, etc.
The Tube Store
  Tubes, parts, accessories, books,
  magazines, tech info, etc.
Tube CD Player 1
Tube CD Player 1
Workshop 1
Workshop 1
Current Project 1
Current Project 1
Preamp 1
Preamp 1
TNT-AUDIO HiFi web-zine:
listening tests, articles, interviews, DIY, etc.
TNT Audio
Questioning Guy; about tube amps
 Some of the old (and expensive) tube gear was (and still is) truly audiophile-grade stuff; such as Marantz and McIntosh.
 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.
Instructor Guy; on harmonic distortion
 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'.
Magic Eye Tubes
Magic Eye Tubes
Magic Eye Tubes
Tube Power Amp and Tube Preamp
About Me
About Me
  Not exactly.
 Yeah, the typical consumer grade tube stuff 'went out with the '60's', but that's not what we're talkin' about here. Lots of new audiophile-grade tube amps and tubes (both new and old stock) are available these days.
 Some of the parts that are used in building tube amps (like transformers and capacitors) have come a long way in terms of performance, since the days of the old 'record player'.
Single Ended Tube Power Amp
Power Amp 1
Power Amp 1
   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).
  Tube amps?!?!...  Tubes?!?!...
 Whatcha talkin' 'bout Willis?
You mean like they used to use 'way back when' ; in old record players and TV's?...
 Didn't those things go out with the '60's??
 Links to just a couple of my favorite tube suppliers; there's many more 'out there'.
HiFi Tube Guy; on tube amps
HiFi Tube Guy; about this site

Tube Amps