(Based on 
Searching serial numbers
Ferocious jam tracks, top-grade looping, and hundreds of amazing tones in a performance-ready floor unit.
The Line 6 JM4 guitar looper pedal features over 100 jam tracks performed by A-list studio players including Jason Bonham, Tony Franklin, Carmine Appice, Gregg Bissonette and many more slamming the drums, thumping the bass and hacking away at guitars. It's a fully featured looper pedal with sound-on-sound loop recording.
Along with looping capabilities, the JM4 contains an instant collection of amazing tones including 200+ artist-created presets, 150+ song-based presets, 12 original Line 6 amp models, seven guitar effects, vocal effects and 36 banks for saving user-created tones.
It's a portable, heavy-duty, all-in-one effect pedal with an enormous amount of features, tones and opportunities for inspiration. Casual and serious guitarists in search of jamming, practice and performance helps will find the JM4 looper invaluable.
The JM4 supplies you with awesome Line 6 tones and effects. It provides a backdrop for players to explore different musical styles and jam with studio-quality musicians. The guitar pedal features exciting, energized jam tracks. It's like playing with a real pro band, because you are playing with a real pro band.
Based on 
