OP-XY compresses Teenage Engineering's most advanced sequencer yet into an aluminum slab barely bigger than a notebook — eight synth engines, three samplers, and a 64-step sequencer spread across sixteen pages, built for composing full tracks without ever touching a DAW. Twenty-four-voice polyphony means dense chords and layered textures are possible even on a device this size.

Step Components let individual steps be randomized, bent, skipped, or multiplied on the fly, while a "Brain" transposition function reshapes an entire pattern's key with one motion. A dual-CPU system and best-in-class DAC push the audio quality well past what the compact chassis suggests, and a rechargeable battery covers a full session away from a wall outlet.