A 4-operator FM sound engine offering dynamic and expressive additive synthesis, with continuously variable feedback on every operator allowing for a wide-range of sound creation. Featuring 37 high quality mini keys and two programmable effects blocks with seven effect types per block. USB to host allows MIDI connectivity to a USB-equipped computer or iOS device, with MIDI IN/OUT connectivity via mini-DIN. Dual 1/4 inch unbalanced line outputs and a 3.5mm aux line input allow connection to a wide range of devices. Built-in speakers and battery power ensure inspiration can strike in any place, any time. Ideal for mobile musicians, music creators, keyboardists and sound designers.