I am selling my Roland MC-303 Groovebox which I have had since new around 30 years ago! I have recently factory resetted it and have created some new patterns to test as you will see from the video. Works well but the volume knob top left is loose so will spin round freely although the volume will still increase / decrease. I haven't tried but I assume someone with better tech knowledge may be able to fix. All functions work but as expected for kit this old, selection buttons can be a bit sticky at times. Comes with original power pack but no instructions or leads. Many thanks for looking.
eBay