Starting today, I will be gradually lowering the price over three days. I purchased this on Amazon, but I have no use for it, so I am selling it. Below are the manufacturer's details. I took it out of the bag once. The Movall Ultimate Drive provides a rich, distorted overdrive that surpasses what a diode tube amp can offer. Two operating modes: HP/LP. Low Peak mode (LP) barely colors the original sound, but is suitable for clean boosting. Unlike typical diode clipping circuits, it can produce increased headroom, tube amp sound quality, subtle level changes, and complex harmonic space effects. Small and exquisite. Aluminum alloy casing. 9V center-negative power adapter (not included).