- Power: 9V center-negative power supply
- Input Impedance: 1MΩ
- Output Impedance: 100Ω
- Soft-touch True Bypass Switching
- Top mounted jacks
- Controls: Gain, Level, Shift, Tone, and Comp
- Handmade by in Dundee Michigan
The Thermal Drive is based around the classic Boss DS-1 circuit with some much needed upgrades. The Shift knob alters the high end cut off of the tone control, so when the Tone knob is maxed, the Shift knob adds and subtracts midrange from the output. This is by far my favorite tone stack for dirt pedals. The Comp switch changes how compressed the signal becomes by switching out clipping diodes. The three options for the switch are silicon, red led, and asymmetrical silicon. Take control of your dirt with a much improved classic.