Digitech RP55, E-Gitarren Multieffekt, 11 amp models, 5 cabinet models, 20 studio quality effects up to 8 at the same time, 30 high quality drum patterns, 40 user presets, 40 standard presets, chromatic tuner, expression pedal input, stereo output (usable as headphone out), low-noise 24-Bit A/D converter, works with battery or optional power supply (DigiTech PS 200 R)