june 1976
Technics RS-7900

The unproduced RS-7900 !
It featured in a single box what was one of the main battles around EL: the indexing/programing feature.

The other proto was resembling this one but without the program pad/keys which could, however, receive an external adaptor box performing the same duty.
Neither units sported a model number (announced here and there so they really are 7900s) and neither got finally produced.
As for the Teac, it is a real pity Technics discarded the looks of the 7900 with it as it was quite obviously far more refined than what became to the smaller RS-7500...

From the cover of a june 1976 issue of Musen to Jikken (Japan).