The black DX5 case came after the other two cases and dropped the DX logo after the name YAMAHA. Yamaha made 3 hard cases out of fiberglass for their synthesizers. These were designed to protect the DX1, DX5, and DX7 respectively. This set was 18 years on the making...
I first saw the Casio CK-500 in 1985. It's still until now the only keyboard I know of with dual cassette players. Dubbing from tape to tape was quite a big deal in the mid 1980's and I was very tempted to buy this novel machine. Unfortunately those mini keys were a...