The FR-3x is the perfect fusion of traditional accordion performance and modern digital functionality. Imagine a world-class lineup of accordions and orchestral instruments in one convenient instrument, all instantly selectable and controllable. With new bellows pressure-sensing circuitry, the FR-3x provides faster response and higher sensitivity and precision, plus detection of the bellows opening and closing. In addition, the new bellows resistance regulator lets you adjust the bellows' inertia for the ultimate in comfort and playing feel. The USB host capability allows you to customize the onboard orchestra and accordion sounds, to save/load user program data, and to manage MP3s and wave-file playback. Lightweight and portable the FR-3x is perfect for students, accordion hobbyists, as well as stage performers.