How do I use the mixer?

The Mixer is the final stage of the OP-1's sound path where you balance tracks, shape tone, and add effects before outputting to headphones or speakers.

Press the Mixer key to access it. The mixer has four sections controlled by T1-T4.

Track Levels and Pan (T1)

Press T1 to adjust individual track volumes and stereo position.

The four encoders control Track 1-4 levels (0-99). Turn any encoder to adjust that track's volume. Hold SHIFT while turning an encoder to pan that track left or right.

EQ (T2)

Press T2 for three-band stereo EQ on the final mix.

Blue encoder controls bass, green controls mids, white controls treble. The orange encoder sets the overall EQ amount. Turn it counter-clockwise to bypass EQ entirely.

Master Effect (T3)

Press T3 to toggle a stereo effect on/off for the entire mix. Hold SHIFT + T3 and turn the blue encoder to browse different effects.

Master Out (T4)

Press T4 to access final output controls.

Blue and green encoders control master left/right balance. The white encoder adds drive, which increases perceived loudness and adds pleasing distortion at higher settings. Orange controls the release time of the drive's compression. Longer release creates a pumping effect. Hold SHIFT while turning blue or green to adjust both L/R channels together.