Valve Audio Amplifier Schematics

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Keith Snook's. — Valve Amplifier and other Schematics

http://www.keith-snook.info/schematics.html

Beard Audio P35 valve power amp circuit modified to remove the problem d.c. input coupling and the active bias circuit ~ parallel valve amplifiers need good output transformers which the original does not have ~ and separate resistor biasing helps prevent them melting down with inevitable valve mismatch. Beard Audio P35–M70.

DIY Vacuum Tube (Valve) Amplifier Projects - Hi-Fi Audio

https://diyaudioprojects.com/Tubes/tubes.htm

The input stage of the amplifiers consist of a preamplifier and cathode phase splitter using a ECC82, a driver stage using a ECC99 and cathode followers using a ECC82 tubes. The output stage uses four 300B directly heated power triodes in a parallel push-pull configuration. The output power is about 25W.

Practical Amplifier Diagrams - tubebooks.org

http://www.tubebooks.org/Books/Atwood/Robin%20&%20Lipman%201947%20Practical%20Amplifier%20Diagrams.pdf

Audio amplifier schematics Keywords: Audio amplifier schematics Created Date: 1/6/2007 11:45:09 AM ...

A Look At A 500W Valve (tube) Audio Amplifier …

https://www.youtube.com/watch?v=vyHKfRw7Dts

I came across this schematic of a 10 x KT88 audio amplifier on the net... it looks like one I built back in the 70's, it may well have been from this schematic.

DIY and Hi-Fi Audio Schematics - DIY AUDIO PROJECTS

https://diyaudioprojects.com/Schematics/

DIY and Hi-Fi Audio Schematics. This is our collection of DIY and Hi-Fi Audio Schematics. Feel free to send us your hi-fi audio schematics and we will add them here. If you have built any of these circuits, we would love to hear from you so send us your comments. Many of these diy Audio Books contain schematics.

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