Keeley Synth 1, Effect Pedal for Electric Guitar, Fuzz / Synthesizer / Volume Swell Effect Pedal, Analogue operation, Filter frequency adjustable via Expression Pedal, Chaos mode for changing the Synthesizer Detection mode (normal = positive / negative peak, chaos = zero-cross detection), True bypass, Controls for Filter, Level, Blend and Attack, Chaos toggle switch to change the dimensional triggering, 3-way waveform switch to select the filter waveform (sine / sawtooth / rectangle), Status LEDs, Bypass footswitch, Metal housing, 6.3 mm mono jack input / output, 6.3 mm TRS expression input, Power supply via optional 9V DC power supply, 2.1 x 5.5 mm coaxial connector, polarity (-) inside, Current consumption 70 mA, Dimensions (W x D x H) 95 x 120 x 50 mm, Weight: 350 g, Made in USA@+*Note: Battery operation not supported*@+@+*Note:* Register your product at www.w-distribution.de/Warranty and extend the warranty to 4 years.