Wampler Plexi-Drive Mini, Effects Pedal for Electric Guitar, Overdrive, Improved plexi-drive circuit in a miniature housing with additional new functions, Classic british stack tone, Completely new mid boost switch produces a powerful, throaty, tube-like boost by influencing several amplification levels of the circuit simultaneously, Controls: Gain, level, tone, Switches: Bass boost, mid boost, LED: Effect on, Foot switch: Effect bypass, Input: 6.3 mm jack, Output: 6.3 mm jack, Power supply connector: DC socket, 5.5 x 2.1 mm (negative polarity inside), Current consumption: 2.3 mA, Powered via 9-18 V DC power supply (not included), Suitable power supply: Article Nr. #409939# (not included), Dimensions (W x D x H): 38 x 89 x 38 mm, Made in the USA@+*Note:* Battery operation is not supported.@+@+