Roland SOUND Canvas SC-55ST, MIDI Sound Module I used this 30 years ago, connected to an X68000. I've confirmed it produces sound by connecting it to Windows before listing it. I'll include the USB MIDI conversion cable I used for testing as a bonus. As the photos show, there are scratches and stains. The switches and volume knobs are discolored. Due to its age, please understand that it is non-returnable and non-refundable. - Brand: Roland - Model Name: SOUND Canvas SC-55ST - Volume Adjustment: With volume knob - Power: DC IN 9V - USB to MIDI conversion cable (Bonus) Thank you for looking.