This vacuum tube overdrive pedal recreates a legendary British-made vacuum tube amplifier that has been loved for over 60 years. Furthermore, we've implemented a toggle switch to represent the middle frequency, which isn't present in the actual hardware, enabling a middle boost. With its ability to handle everything from low gain to maximum gain, and combined with the mid-level switch, this pedal is extremely easy to use. Equipped with low-noise/high-reliability vacuum tubes. The DC 9V power supply is boosted internally to 150V before being supplied to the vacuum tubes. Its unique circuit configuration fully expresses the distinctive characteristics of vacuum tubes.Condition: No problems with use. Parts requiring acknowledgment: None. Accessories: Box, instruction manual. Warranty: No warranty. Sold as is.