The OP-1 is a portable music workstation incorporating a synthesizer, sampler, sequencer, multitrack recorder, drum machine, mixer, and controller. It was released in 2011.
Why is my sequencer key triggered when playing D#?
For a few dyas now my op-1 one is been acting weird. My sequencer key is getting triggered when playing D# and vice versa. This makes playing impossible. Is my op-1 doomed?
