There are a ton of synthesizers out there, so it's notable when something truly new appears. Motor Synth is nothing if not novel. It produces sounds by spinning eight brushless electromotors at precise RPMs that correspond to musical notes. Magnetic pickups turn the resulting oscillations into sound. At the same time, infrared sensors read the reflective optical disks on the shafts of the motors, converting their readings into sound. Its old-school layout also features common analog controls as well as an innovative looping system, and in addition to MIDI control, the Synth can also track a mono signal from its 1/4-inch input, turning it into a harmonizer for an electric guitar. A protective glass cover sits above the motors, making the instrument as interesting to look at as it is to hear.