The teenage engineering OP-XY is a sequencer, synthesizer, and sampler in one. This means that you can control your music, play patterns, make electronic noises, and use audio recordings in your music. This way, you don't need other devices and can easily make music anywhere. The built-in speaker produces room-filling sound, so you can clearly hear what you're making right away. You don't need separate headphones for this. You can use the sampler for 16 hours on a full battery. That way, you can use it wherever you want all day. Thanks to the 8 synth engines, you can use many different sounds and styles in your music. That way, you can use a deep bass, sharp sounds, and electronic sound effects.