Small enough to fit in your pocket and powered by a pair of AA batteries, the Teenage Engineering PO-16 Factory Synthesizer features multiple real synthesizer engines including FM, subtractive synthesis, wave table, and physically modeled strings with 16 punch-in effects including delay, bit crusher, and filters. It also includes 16 punch-in arpeggio and chord playing styles. The punch-in play styles are a quick way to create melodies. The concept is to minimize the effort of entering a complete series of notes in a sequence by simply adding one or a few notes and then allowing the punch-in function to fill in variations of the notes that follow. The synthesizer parameters can be locked while an auto compressor and hardware limiter ensure adequate signal generation without clipping. A 16-step sequencer features 16 available patterns and up to 16 patterns can be chained together. An integrated clock and alarm clock expands the creative possibilities of the instrument. A jam sync function with 3.5mm audio in and out connections allows for multiple synthesizer units to be linked together. Using high quality components with low power consumption, the synthesizer is cleverly designed with a Silabs EFM 32 Gecko CPU, a Cirrus Logic DAC, and a Knowles speaker placed under a novel animated LCD on a single circuit board. A fold out stand makes it easier to play and rear panel speaker solder terminals allow you hook up the unit to a larger sound system. An optional tailor made silicone pro case (sold separately) adds anti-sleep feet, battery protection, and professional feel buttons to this very unique music making device.