I started using this 4-track in 1986 and that for 10 years.
The re-re no longer a secret to me. it was what we wanted to have as mix before recording.
For youngsters who are ns with Cubase VST is the prhistoire ... For others it is full of good memories and audio K7 Chrome 90 min.
C'tait a great device.
I still have it in my little personal muse, cot Aka's X7000, the box DDD5 Korg rhythm, my Atari 1040ST, of Notator ... etc ... etc ...