teenage engineering PO-20 Pocket Operator Arcade Synthesizer TE010AS020Small enough to fit in your pocket and powered by a pair of AAA batteries, the Teenage Engineering PO 20 Pocket Operator Arcade Synthesizerfeatures real synthesized arcade, drum, and chip tune sounds with 16 punch in effects including solo chords, filters, fill ins, glitches, and arpeggios. The synthesizer parameters can be locked, while a 16 step sequencer, which holds 16 patterns in memory, can be chained into a song with up to 128 patterns. An