Modded Hi-Octane Tube Preamp

A rack-mount tube preamp for guitar, based on the Hi-Octane amp from

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I wanted a tube preamp, but I didn't want to pay the premium. So I built one! The chassis is from some old rack-mount television gear that I gutted, and the circuit design is from the Hi-Octane tube amp on, with some minor tweaks.

See this video to hear what it sounds like:

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