‘Trackplan’ was a complete recording system based around mixer designs called the ‘SM’ series which evolved into the ‘AM’ series and formed the basis of our broadcast mixers. We built a number of ‘Trackplan’ systems for prominent Rock and Rollers of the time, but the multi-track tape recorders available then were not a success.
The mixers were uncomplicated and good quality…. but that was a very long time ago!
So the answer has to be …no.