Description de chez Thomann : - Fishman AFX AcoustiComp Mini Compressor; Effects Pedal for Acoustic Guitar; specifically tuned for acoustic instruments; Controls: Level, Comp; LED: Effect On; Footswitches: Effect Bypass; Connections: Input (1/4" Jack), Output (2 x 1/4" Jack); Power Supply connector: Barrel Connector 5.5 x 2.1 mm, center negative; Current Draw: 53 mA; powered by a 9 V DC Power Supply (not included); suitable optional Power Supply: Item no. #409939; switchable True/Buffered Bypass; Dimensions (W x D x H): 48 x 97 x 49 mm (1,9" x 3,8" x 1,92"); Weight: 181 g (0,4 lbs); Note: Battery operation is not supported