Black Eye X
The Black Eye is based on the Soldano Supercharger GTO. It never gets fully "clean," but it can go from mild overdrive to full screaming distortion, and cover everything in between. It uses a pair of 12AX7, but due to only having three controls I was able to fit it into the same smaller size (Hammond 125B) enclosure.
Controls: Gain, Tone, Output
It takes a 9-12V input, and can accept center negative or center positive inputs. It uses internal regulators to supply 200V to the plates, giving it the richness you expect from a full high-voltage preamp.
CURRENT DRAW NOTE: Like many Sushi Box pedals, this one uses tubes, which means current draw is a bit higher than a standard pedal. During warm up it will try to pull around 900mA on a 12V input, and when it has finished warming up it will pull about 560mA on a 12V input. I recommend a 1000mA (or more) supply.