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foone🏳️⚧️ on Twitter: "A Yamaha MDF1 "MIDI Data Filer". This records or plays back MIDI data, and it stores them on QuickDisk floppies! https://t.co/d0NfJ1GnpE https://t.co/dK2MebNYVS" / Twitter
Yamaha MDF1 MIDI Data Filter NO Power Supply Untested AS IS | eBay