Stereo vibrato guitar amp project

Guitar amps & other music electronics

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Lauri
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Stereo vibrato guitar amp project

Post by Lauri »

My latest guitar amp project is a stereo amp with vibrato and reverb. The amp is inspired from Gibson GA-83S where the vibrato circuit is based on Dorf Universal Vibrato.

Power amp is cathode biased with zener diodes limiting how much cathode voltage can rise. Either 6V6 or 6L6 tubes can be used. With 6V6 tubes output power is 15W per channel and with 6L6 it's 25W per channel. NE5532 op amp that's powered from power tube cathodes is used as a reverb driver.

Schematic:
udw-dual.pdf
(864.4 KiB) Downloaded 31 times
dualvibratopcb2.jpg
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