Based on its acclaimed line of instrument trainers, TASCAM's GB-10 is the ultimate tool for guitar and bass players to learn and record new music. Load up the SD card with your MP3 collection, then loop and slow down licks without changing the pitch. Plug into the 1/4" input to play along through amp modeling, reverb and other effects. The GB-10 even records your music with an overdub mode to build up arrangements.