Valve Projects Books

An Approach to Audio Frequency Amplifier Design by GEC Co. Ltd - code 2001
KT66 Williamson amp, KT88 30w amp, KT88 50w amp, DA42 175w PP amp, DA100 200w PP amp, V1505 300w PP amp pre-amplifier
Valves for Audio Frequency Amplifiers by GEC Co. Ltd - code 2002
Components and circuits, 3W gramophone amp, EL84 PP amp, EL34 SE amp, PL81 15W PP amp, EL34 35w PP amp, 70W EL34 PPP amp, 100W class B EL34 amp
GEC Audio Tube Data by GEC - (circuit designs) code 2003
Electron tubes use, Electron emission, Diodes + triodes, Multielectrode tubes, Amplification, Rectifiers and detectors, Transmitting tubes, Tube…
The Williamson Amplifier - Reprinted from Wireless World - CD Rom - code CD2004
Williamson amp circuit,Circuit description, Williamson modified, Tone contol design, Radio feeder unit
Mullard Tube Circuits for Audio Amplifiers - code 2005
20W EL34 PP amp, 10W EL84 PP amp, 3W EL84 SE amp, 3-valve pre-amp, 2-valve pre-amp, Tone control, 4 channel mixing pre, Tape pre-amp
Glass Audio Projects - 17 Tube designs by Audio Amateur - code 2006
300B push-pull amp,33 power amp, A 6C33C-B amp, A 45 SE amp, Dyna 120 circuit, Woodville`s 50W amp 70W KT88 amp, 300B PSE amp
Power Amp Projects - Audio Amateur - code 2007

Twenty-Six articles on Power Amplifier projects appearing in Audio Amateur Magazine from 1970-1989

(BK2007) Power Amp Projects - Audio Amateur
Practical Amplifier Diagrams - 45 Proven Circuits - code 2009

A great source of information including circuits and descriptions. Dates back to 1947 so all valve circuits.

Practical Amplifier Diagrams - 45 Proven Circuits - code 2009