The new black knobs for the Korg SQ-1 are bigger than the original knobs and made out of black PLA. Due to the increased size and improved profile, they provide a better handling than the small original knobs. The center of the knobs is hollow which allows the red light of the step sequencer to shine through.
Korg SQ-1 Knob Upgrade Korg SQ-1 Knob Mod
Powering the SQ-1 can either be done by batteries or via USB with an angled USB cable.
BLACK Knobs Mod for Korg SQ-1