The Sansui AX-7 ‘Audio Mixer’ c. 1978

Sansui’s late-70’s line of hi-fi equipment is fairly collectible; I’ve had several of them over the years, and they generally sell for good money. My last pair, a tuner and integrated amp, actually went to a prop stylist for a film…  I wish I could remember the name of the picture.  Anyhow, aside from the usual amps, preamps, tuners, and integrated amps, Sansui also made this very unusual device during the ‘first-wave’ of home-music-production: The AX-7 ‘Audio Mixer.’  A four-input HI-Z mixer, the AX-7 was designed to allow the user more easily use multiple stereo tape decks to ping-pong tracks into a layered production.  It also offered global spring reverb!

There is a good-looking example on eBay right now for $99 BIN, which is a great value just for the spring reverb!