The Digitech RP200 Modeling Guitar Processor combines the tones of twelve vintage and modern amps with 28 fully programmable, studio-quality effects and an expression pedal that lets you control them in real time. Up to 12 effects can be used at once, and each effect includes up to 3 adjustable parameters. A 6-character alphanumeric display and 3 know-matrix based user interfaces make editing simple and straightforward. The RP 200 comes ready to use with 40 great factory presets, and includes 40 presets for custom creations. Digitech also includes a rhythm trainer, chromatic tuner, and has a Jam-a-Long jack with the RP200 Modeling Guitar Processor. 24-bit A/D-D/A sound quality. Includes power supply.