This three Channel, 1W high gain FET solid state floor-pedal/amp offers a switchable FX loop and Volume Boost function for more flexibility. There"s also an external 9V power jack, 1/8 stereo media input, headphone output, speaker emulated XLR direct output with ground lift and external RGA-13. Power supply includedThree channels 1W Switchable FX loop Volume Boost function External 9V jack 1/8 stereo input Headphone out Speaker emulated XLR direct output Power supply included