Teenage Engineering OP-1 original MIDI reference

Model scopeOriginal OP-1 hardware, not OP-1 field. References use the original online guide’s tempo and connectivity chapters. Only sourced values are shown. Check each claim’s verification state before relying on it.

Quick reference

MIDI connection: USB MIDI; Manufacturer documented; §13.3
Normal mode channel: Default 1; Shift + blue encoder in COM OP-1 mode; Manufacturer documented; §13.3
Clock follower: Tempo Sync mode; EXT indicates incoming clock; Manufacturer documented; §10.6
Clock master: Tempo Beat match mode; Manufacturer documented; §10.5

Tempo modes

Manufacturer documented

Free does not synchronize to incoming clock. Beat match makes OP-1 the USB MIDI sync master. Sync listens for USB MIDI clock and uses internal timing when it is absent.

EXT indicates received clock in Sync mode. Tape speed remains separately adjustable; following clock does not automatically make every tape recording fit the master’s tempo.

Normal and controller operation

Manufacturer documented

The normal OP-1 mode in the COM screen uses USB MIDI for notes; its default MIDI channel is 1. Shift + blue encoder changes the channel in this mode.

CTRL is a separate controller mode. Normal OP-1 operation can already send MIDI from its sequencers, so CTRL is not required just to sequence another instrument.

Browse OP-1 original fixes

References

Sources & review

Sources reviewed: 2026-10-03. Documentation does not replace a physical hardware test.

Original OP-1 — Tempo · Teenage Engineering · Original OP-1 online guide, chapter 10 · last checked 2026-10-03
Original OP-1 — Song rendering and connectivity · Teenage Engineering · Original OP-1 online guide, chapter 13 · last checked 2026-10-03

Sections reviewed: §13.3; §10.6; §10.5; §10.4–10.6; §13.2–13.4, §13.7.