original roland-powersuply working order 3 push-up buttons missing,(look photos) can be ordered online. doesnt affect the good working order of this one INFO: The BOSS BR-8 is a 24 bit 8-track digital recording workstation for guitar players and other musicians seeking a simple, high-powered alternative to tape-based personal studios. Its acclaimed V-Studio technology—including Virtual Tracks, COSM effects processing and true non-destructive operation—is enhanced with unique features for guitarists including a Rhythm Guide, Phrase Trainer, and a built-in chromatic tuner. 8-track digital recording studio with 64 Virtual Tracks Zip100 drive for recording to convenient, inexpensive 100MB Zip disks Simplified user interface with graphic LCD making digital recording very easy 3 stereo effects processors including COSM Guitar and Bass Amp models, acoustic/bass guitar modeling and dynamics and vocal processing Innovative Rhythm Guide with over 80 built-in rhythm patterns Built-in chromatic tuner and dedicated Hi-Z guitar input Phrase Trainer for slowing down recordings to half-speed for learning guitar licks 24-bit analog inputs, including 2 microphone inputs Optical digital output for connecting to digital devices such as DAT or MD