Zoom acoustic guitar multi-effects pedal. 16 Source Guitar presets, 15 target guitar models / body presets 9 Effects with adjustable parameters. Input: ¼” Jack. Output: 2 x XLR balanced Anti-Feedback control. High-quality, noise-free Piezo/magnetic input pickup select 3-band EQ Boost switch up to 9 dB for more gain. Integrated LED chromatic tuner USB connection for firmware updates. Dual jack outputs for connecting to guitar amplifier and mono or stereo PA systems. 3 power supply options: a) with 2 x AA batteries, b) with Zoom AD-16 power supply (9V DC included) and c) with USB micro-port.