The RP50 delivers award-winning amp, cabinet and pick-up modeling, as well as an arsenal of studio-quality effects in compact pedal. It uses DigiTech"s AudioDNA DSP chip to ensure that both modeling and effects are world-class, plus 24-bit A/D/A conversion so that no frequency response is lost between inputs and outputs. The RP50 includes a drum machine with 30 patterns and an easy-to-use 13-LED array tuner. Includes power supply. Highlights 20 effects - Use up to 8 effects at a time Effects include: Programmable EQ; Delay (mono and ping pong); Auto Wah; Chorus; Compressor; Flanger; Phaser; Tremolo; Vibrato; Rotary Speaker; Pitch Shift; Whammy; Auto Ya? 11 Classic Amp Models Cabinet, acoustic guitar and pickup models 40 factory and 40 user presets Expression pedal input Stereo output doubles as a headphone jack Chromatic tuner with user friendly LED array