OP–1 field, now with velocity sensitivity. download the latest firmware update for OP–1 field to experience velocity sensitive keyboard, as well as the ability to adjust tape speed to external clock, a mono/stereo setting for line in, pre-tape panning, and syncing of fm frequency with OB–4. read our latest NOW post to learn more, and visit our downloads page to update. thanks to our friends @ericssonreuter for their dedication to velocity science.