My goal was to design a high-powered wide-bandwidth amplifier with the finest sound and to keep it simple but not too simple. I rejected single-ended (SE) designs because of their low power and limited bandwidth. I wanted to see if I could get similar sound quality perhaps better with an efficient push-pull design. And I [...]
In the the valveamp schematic below you see that the amplifier is built with only 5 vacuum tubes!
The circuit is a classic push-pull amplifier using an output transformer with a center tap.
This topology is widely used for tube amplifiers, because it is impossible to make a complementary P-type tube:
you cannot make holes in vacuum [...]
Trainwreck Express Guitar Amplifier
Because of their sound, Trainwreck amplifiers (http://www.trainwreck.com) have an almost occult like following among guitarists. And, because they are produced in such small volumes, they are almost impossible to obtain. If you’re lucky, you may find one on eBay for $20,000 or more. However, a number of individuals have reversed engineered these [...]
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