SPECIFICATIONS 16 source guitar type/body presets for accurate tone re-creation 15 target guitar type/body presets for tonal refinement 1/4 in. input Two XLR balanced outs Two 1/4 in. outputs for mono or stereo connection to guitar amps, headphones, and audio interfaces High-quality, low noise preamp 9 effects with adjustable parameters Piezo/magnetic input pickup select Built-in compressor 3-band equalizer Input and output gain/sensitivity adjustable via single volume knob (patent pending) Clipping indicator Anti-feedback control Boost switch for up to 9 dB of additional gain Built-in chromatic visual-LED tuner USB connection for firmware updates Dual output jacks for connection to guitar amps and mono or stereo PA systems Three power options: 2 x AA batteries, the included Zoom AD-16 power adapter (9V DC in), or bus power via micro-USB port