The Roland Jupiter X is the latest iteration of Roland's iconic synth. Iconic synthesizer with legendary sound and design. The 61-key JUPITER-X is the peak of Roland sound quality and design. Its all-metal build uses premium materials throughout, and the all-new aftertouch-enabled keyboard is the best we 've ever made. A familiar layout and large array of controls let you dig in and easily shape your sounds, whether you 're composing in the studio or performing on stage. Big and beautiful. JUPITER-X has a classic and expansive control layout that 's immediately familiar. The extended controls are large and comfortable while the big RGB lit buttons give assurance in dimly lit studios and stages. The aftertouch enabled 61-note keyboard is a dream to play with just the right amount of weight to handle anything from electric pianos to face-melting leads. Classic analog to vintage digital. B-Stock items have minor cosmetic imperfections but are otherwise fully working and come with a full warranty.