Walrus Audio Eras; Effects Pedal for Electric Guitar & Bass; Five selectable modes - each with its own basic distortion sound, comprehensive sound selection from classic rock to modern metal; Controls: Volume, Blend Gain, Bass, Mode, Treble; Push Buttons: ; LED: Effect On; Footswitches: Effect Bypass; Connections: Input (1/4"" Jack), Output (1/4"" Jack); Power Supply connector: Barrel Connector 5.5 x 2.1 mm, center negative; powered by a 9 V Battery or a 9 V DC Power Supply (not included); suitable optional Power Supply: Item no. #409939; True Bypass; Dimensions (W x D x H): 66 x 121 x 52 mm (2,6"" x 4,76"" x 2,05""); Weight: 270 g (0,6 lbs); Made in USA