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by stoic 3407 days ago
It's a bit tough to play by itself, but I'm okay with the tradeoff for the portability.

FWIW it works quite well if you connect it to a MIDI host and use another controller to play or sequence the synths on it.

...just don't connect your 12v AC adapter to the OP-1's USB hub that wants 5v, or you'll lose all data connectivity (USB disk mode and MIDI) to the unit. :(