|OP-1 Portable Synthesizer from Teenage Engineering|
Teenage Engineering occasionally adds new capabilities and features to the OP-1's synthesis engines. The user can upload these via its PC/Mac interface. The OP-1 also contains a microphone for recording voice and sampling audio. It also contains an FM radio, so the user can sample audio from radio broadcasts.
There is said to be an extensive world-wide users community. For example, the OhPeeWon.com site is an independent site created by OP-1 enthusiasts.