Vintage Voice Crystal 4 ROM memory card for compatible Korg M1 and M1R synthesizers.

This is a third-party sound expansion card labeled "Voice Crystal 4" and "50/100 Voice ROM for Korg M1 M1R."

Condition:

UNTESTED. I do not have the compatible Korg synthesizer equipment needed to verify the card's operation or sound programs.

Shows noticeable cosmetic wear, including surface scratches, scuffs, and marks on the label and housing. Please examine the photographs for exact condition.

No functional testing has been performed.

Sold as pictured, untested, for parts or repair, with no guarantee of functionality.

Included: One Voice Crystal 4 ROM memory card only. No synthesizer, manuals, or other accessories.