Sansui WSX1 6-channel MULTITRACK DOUBLE-CASSETTE RECORDER, Our #SA838:
We test out a lot of multitrack recorders and this one was truly a pleasure.  It's really an awesome machine. Very intuitive design. Easy and responsive to operate. Very quiet for cassette recording.

VERY CLEAN MACHINE. No signs of wear. Does not appear to have  been used very much at all. Below are some specs from the manufacturer.

Description
The WS-X1 6 channel multi-track recorder is the core component of Sansui Musical Electronics, tying associated peripherals into a highly versatile multi-track recording system.

It's a self-contained console type 6-channel MTR with integrated 8-channel mixer and 2-channel master recorder.

The format is both unique and easy to use: it offers two more channels than conventional multi-track recorders, and yet operating it is much less complex than with an expensive 8-channel MTR. And because it's portable, you can take it with you anywhere.

Specifications
Frequency response: 40Hz to 15kHz

Track format: 6-track, 6-channel record play (deck A)

Wow and flutter: 0.06%

Channel separation: 50dB

Dimensions: 625 x 110 x 343mm

Weight: 9.0kg