The Teenage Engineering EP-133 K.O.II is a versatile sampler and sequencer with a built-in microphone and speaker. It offers 6 stereo voices or 12 mono, 64 MB memory, 999 sample slots, and features 6 master and 12 punch-in effects. The device, with pressure-sensitive keys and a multifunctional fader, supports a sampling frequency of 46kHz/16 bit and includes various inputs and outputs.