Home Brew Electronics HBE Hematoma Bass Overdrive/Pre-Amp A two channel bass effect consisting of a Pre-amp and an Overdrive. Pre-amp and Overdrive can be used seperately or combined. Pre-amp Features: Pre-gain control for up to 5db boost. Overdrive Features: Gain, Level, Tone and EQ Shift, which changes the sweep of the tone control and provides a warmer smoother tone when engaged. pedal is clean and in very good condition from a smoke / pet-free environment velcro / box / instruction sheet pic here: http://tinyurl.com/7vu63nw $125 / USPS Priority shipped / paypal trade interest in: Iron Ether Nimbus Dr Scientist The Elements Plutoneum Bass Chi Wah Wah PM with offers thanks!