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Stereo Power amp project
 This project is an all tube, stereo, power amp, rack unit. I built it so that I can feed a Stereo tube pre amp signal into a stereo T.C Electronics G-major multi effects unit and then into a Stereo power amp. The G-major effects unit has stereo inputs and outputs. The stereo outputs let you do ping pong delays and other true stereo effects such as chorus.

 I happened to have a few pieces of a rack unit laying around and so I pieced together what I had and used some poplar to make the wooden parts. I raised up the floor of the 3 space rack unit 1.25 inches to make space for the point to point wiring.

 This design is two 18 Watt Marshall power amps in one chassis. They share a common power transformer that is made for 4 x EL84's in class A operation. There are two 18 Watt output transformers and one Fender 125C1A choke. The knobs on the front are input level for each channel. The back panel has two input jacks, two impedance selector switches and two speaker jacks.

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Signal chain path for my rack rig
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Click on the images below to see a larger image
Top rear View Top Front view
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Inside front view Inside rear view


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