Boss has start shipping its eBand JS-8 Audio Player for Guitarists, it is a portable audio player that was designed for guitar players and comes with Guitar Effects. It features a built-in stereo speaker system which playback full songs, backing tracks, or rhythm loops with high quality BOSS guitar effects. It will help guitarists who want to learn songs, solos and riffs, practice new songs outside of band practice, play along with any of their own collection of music, or create new songs while jamming with audio tracks.
It offers USB connectivity which allows the guitarist to playback music from a USB memory stick or SDHC memory card up to 32GB. The eBand also come pre-loaded with 300 backing tracks and rhythm loop. It is priced at $389 at Amazon