Here is a Stereo Integrated Tube Amplifier Kit that is easy to build, sounds great, and is just fun! The Stereo Integrated Tube Amplifier utilizes 10GV8 triode-pentode tubes; these provides 8 tube stereo performance with just 4 tubes. The amplifier has built in volume control so that it can be driven directly from a CD player, tuner, etc. The amplifier operates from 120 Volts 60 hertz and may be plugged into a convenient outlet.
The K-12G Stereo Integrated Tube Amplifier comes complete with all the resistors, capacitors, tubes, connectors, circuit board, transformers, and necessary hardware for mounting on the provided "bread board". A finished case is available for the K-12G Stereo Amplifier. (See Case)
Model 12G Stereo Integrated Tube Amplifier
The 12G Stereo Integrated Tube Amplifier is designed to operate from the audio output of CD players, tuners, etc. and uses a red RCA jack for the right input and a white RCA jack for the left input. The amplifier is designed to operate from 120 Volts 60 Hertz and may be plugged into a convenient outlet. The Stereo Integrated Tube Amplifier is designed to operate with 4 to 8 ohm speakers.
Page Updated June 2017
Input Impedance = 100k ohms
Output Impedance = 8 ohms
Output Power = Push Pull 8 Watts per Channel
Minimum Input for full output = .4 V
Frequency Response = 20 to 20,000 Hz
Total Harmonic Distortion at 1 Watt <1%
The circuit is a Class A amplifier
Caution: These amplifiers may be operated as supplied, however voltages in excess of 240 volts are present on the board and the tubes get very hot. It is advised that the amplifier be mounted in a well-ventilated metal enclosure to reduce the potential of fire or shock.