images via this auction, via Loscha."The DX Turbo 1 Memory Expander is a very rare and essential accessory for anyone who owns a DX7, DX5 or DX1. Use it to store your programs for live work so you don't need to drag your PC along, or use it to back up your latest sonic creations. Functions like RAM1 cartrdiges and is like having 20 RAM1 cartridges at the push of a button.
It can hold an incredible 20 BANKS of either 32 Sound Memories or 32 Performance memories for a total of 640 sounds or performances.
I am including a CD-ROM containing over 200,000 voices for the DX7 and other 6 operator DX/TX synths. This is my own personal collection which I have bought, found, downloaded, acquired and compiled over the years. It is pretty well organized and I believe it represents a fairly huge and comprehensive collection of FM sounds. It also contains various software and documentation.
Some of the contents include the entire VRC Cartridge Set files from 101 to 112. DX7 IIFD VRC 1001 to 1003. The original factory voices for the DX7, DX5, DX1, TX802, TX7, TX816 and literally thousands more. I doubt you'll find a more comprehensive and well organized collection anywhere."
