Luxman DX-104
(1983 - 1984)

Exit the X-1D prototype (aka Alpine AD-7000), enter the Luxman DX-104 !

I always thought the Luxman DZ-xx weren't the first produced under the LUX banner and the recent discovery of the X-1D proto confirmed this. But this DX-104, resurfacing from an australian catalog, proves it 100%.

So, my guess is that, since Alpine protos were available before the new format's official launch, the Aurex XR-Z90, the Toshiba XR-Z90 and the Kenwood L-03DP were all produced by Alpine (with Kenwood adding its Sigma Drive outputs).
The original, thus, should be the Alpine AD-7100.

The DX-104 (un)visibly wasn't distributed in many markets, just like its Alpine original, and neither of them was made available in Japan. It was originally named CP-01.