Tube Audio Amplifiers Needn’t Be Complex. 25 Comments . by: Jenny List. ... It’s a conventional tube amplifier circuit in which the triode is a preamplifier for the pentode power ...

The schematic shows one channel of a stereo amplifier, and the power supply is sufficient for both channels. Transformer T2 supplies the voltages required for the vacuum tube plates. Selection of the ...

The circuit was on the vendor’s website and is so commonly used for these sort of kits that it can be found all over the web — a very conventional twin common-cathode amplifier using a pair of ...

The audio guru also recommended a few more sites: This site maintained by Roger Russell, formerly with McIntosh Laboratory, has lots of good stuff about speakers, transformers, and tube audio.; The ...

A 300B vacuum tube produces about 8 watts of power, the practical limit of the device when operated in a single-ended circuit. The 91E Integrated Amplifier employs Whitener’s patented Steered ...