Empress Effects Phaser; Effects Pedal for Electric Guitar; The all-analog signal path is controlled by a microprocessor, allowing it to maintain all its character and analog flavor while adding a ton of possibilities for control and adaptability; 8 Auto modes: Envelope follower, center & speed, speed(sine), speed(square), audio sweep trigger, random level trigger, rhythms and direct control; 8 Waveforms: sine, triangle, asymmetric sine, swung sine, sawtooth, reverse sawtooth, square and step; Tap Tempo with Ratios; 2, 3 & 4 Stages; The Universal Control Port allows you to connect an expression pedal, external tap switch, control voltage, external audio input and MIDI all using a standard 1/4" jack; Controls: Gain, Waveform,/Submode, Width/Release, Speed/Ratio/Sensitivity, Blend; Switches: Expression: Speed/None/Width, Resonance: Little/None/Lots, Stages: 2/3/4, Speed range/attack: Slow/Med/Fast, Mode: Tap/Knob/Auto; LED: Effect On, Tempo; Footswitches: Effect Bypass, Tap; Connections: Input (1/4" Jack), Output (1/4" Jack); Blend Exp (1/4" TRS-Jack), Cotrol Port (1/4" Jack); Power Supply connector: Barrel Connector 5.5 x 2.1 mm, center negative; Current Draw: 120 mA; powered by a 9 V DC Power Supply (not included); suitable optional Power Supply: Item no. #409939; Dimensions (W x D x H): 89 x 114 x 38 mm (3,5" x 4,5" x 1,5"); Weight: 454 g (1 lbs); Handmade in Canada; Note: Battery operation is not supported