Ampeg Jupiter II Restoration - $650 (Madison)

Ampeg Jupiter II Restoration 1 thumbnail

condition: excellent

make / manufacturer: Ampeg (restoration)

model name / number: Jupiter II

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Extremely rare Ampeg Jupiter II rebuilt from the ground up. In the last 10 years I've only seen two of these available for sale, the most recent 8 years ago. The top preamp features a normal and vibrato channel and has been completely re-capped. A control was added for tube driven spring reverb on both channels and replaces the original "stereo" input. The true Vibrato has a liquid/leslie like quality to it and nails the "Lucy In the Sky" intro, or can be switched to a typical Tremolo like effect.

The lower power section is a scratch build currently running a pair of classic coke bottle 6L6G's at around 18W (300V plate with fixed cathode bias) into a 12" speaker, has the power supply and tube reverb circuit, and a multi-tap output transformer.

Everything is housed in a newly built tolexed cabinet. The amp is fully hand wired with a total of 8 preamp tubes (5 up and 3 down). I'll be happy to answer technical question in person should you decide to try it out, but otherwise the pictures tell the story for those interested. Schematics are included.

post id: 7918159191

posted: 2026-02-28 10:09

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Ampeg Jupiter II Restoration - musical instruments - by owner - sale...

Extremely rare Ampeg Jupiter II rebuilt from the ground up. In the last 10 years I've only seen two of these available for sale, the most recent 8 years ago. The top preamp features a normal and...