These are a few of my fa-vo-rite liiiinks! (sung to the tune of "These are a few of my favorite things" from "The Sound of Music")
TUBE AMPS, SCHEMATICS, AND PARTS
D. W. Fearn Tube Microphone Amplifiers
This guy makes tube microphone amps. The latest Paul Simon CD was recorded exclusively through his VT2. The sound is phenomenal. You may need to turn down the volume though, because tubes tend to sound louder than solid state. This is a phenomenon that he himself had experimented with. He took a solid state high end mike amp and set it to a certain volume level and took one of his and set it to the same level, but the tube amp sounded subjectively louder.
Steve Bench
What can I say about this guy? He is in my opinion an electronics genius. Look around his site and judge for yourself. He is very informative and helpful. I am impressed with his integration of solid state technology with tube technology. His battery operated amp is amazing, though simple.
got
to hear it to believe!"
Pyramid Audio
Manufacturer of high quality SRPP based EL34 power amplifiers. They
are made on wood base for a rich style for not only quality sound but aesthetically
pleasing decor.
The Crystal Set Society.
Here is a site dedicated
to the preservation of the crystal radio hobby. Includes kits, parts, references
and a forum.
Acrosound
These guys are transformer experts, among other things. This is who
Mike LaFevre is associated with. Check 'em out.
Triode Electronics
This company is one of the best tube and all round
electronics supply houses I have ever seen. Next to Antique electronic
supply (they are equal in my eyes). Ned Carlson is also in my opinion a
very experienced and knowledgable source of info. His info is remeniscent
of the old school where an engineer not only needed to know the theory
but also the practical application. In other words he needed to know how
to solder and what a capacitor looks like. Don't get me wrong, I do not
hold engineers in contempt, it is just that these days the technology is
so vast that colleges are actually cutting out sections of basic electronics
to make room for it all. How sad.
TUBE SCHEMATIC ARCHIVE
This site is full of fun schematics.
American Institute of Physics
This site has weekly articles of recnt discoveries and experiments in
all aspects of phisics from acoustic waves to the use of fullerenes to
Bose-Einstein condensate experiments and more.