Keeley Hydra Stereo Reverb / Tremolo, Effects Pedal for Electric Guitar, True Stereo High-Fidelity Reverb and Tremolo, 3 Selectable studio quality reverb modes: Spring, Plate, Room, 3 Selectable tremolo modes with vintage voicing: harmonic, vibrato, sine wave, Onboard and remote tap tempo, 3 Footswitchable presets, Intuitive Alt control options offer full access to additional effect parameters, Infinite Hold Reverb Trails possible via foot switch, Expression pedal control can be assigned to each controller, The order of the effects can be changed as desired, True bypass or buffered trails (switchable), Controls for Rate / Trem Sync, Depth / Trem Level, Dwell / Wet / Dry, Mixer / Reverb Modifier, Colour, Toggle switch selects Reverb and Tremolo modes, Reverb bypass footswitch, Tremolo / Tap Tempo footswitch, Status LEDs, 2 x 6.3 mm Mono jack input / output (true stereo), 6.3 mm Expression pedal input, 6.3 mm Input for external foot switch, Power supply via 9 V DC power supply (2.1 mm x 5.5 mm barrel connector, polarity (-) inside - not included), Current consumption 115 mA, Metal housing, Dimensions (L x W x H): 120 x 68 x 58 mm, Weight: approx. 350 g@+*Note:* Battery operation is not supported.@+@+*Note:* Register your product at www.w-distribution.de/Warranty and extend the guarantee to 4 years.