24-bit AudioDNA helps the DigiTech RP50 and RP80 Modeling Guitar Processors create the most realistic amp and cabinet models you've ever heard. The RP's includes 11 amp models, cab and acoustic modeling, and studio-quality effects including whammy, wah, chorus, phaser, tremolo, rotary speaker, delay, reverb, and Ya-Ya. Built-in tuner features an arc array of 13 LEDs. Onboard drum machine with 30 different patterns has variable tempo controls. Operates on 6 AA batteries or included power supply. The DigiTech RP50 and RP80 Modeling Guitar Processors is like having dozens of effects pedals in one stomp box.