The Teenage Engineering OP-1 is a synthesizer, sampler and sequencer designed and manufactured by the Stockholm-based company Teenage Engineering. The OP-1 is Teenage Engineering's first product; it was released in 2011 following an introduction at the NAMM Show. It is also considered their core product. The OP-1 is well known for its unconventional design, AMOLED display, and the depth of its synthesis engines.