Unipivot vs Linear Tracking

I would have to concur with Cjfrbw, I've played around with the RS-3 rotary headshell vs a standard fixed headshell and from just casual listening, I cannot say that I can hear a difference in terms of tracking error distortion. But this is only from a casual 45min session when I first got the unit. I can say that I did not take any step backwards either. I hope to spend more time with it in the future. It is a new toy that has no instructions, so it will be trial and error to learn more about this rotary headshell.

How would you measure tracking angle from the output signal? Or what does tracking angle distortion sound like?

If you have the time and motivation, set aside a long weekend with all the KAB 1200 modification kits and apply them to a factory fresh Technics SL1210MG5 one by one and you will be impressed at the outcome and with the changes of each along the way.

Cmk thank you for illuminating me to the audible difference between a LTT and a pivot arm.

I've been told that for an air bearing LTT arm, the air pressure has a relationship to the quality of the low end (bass) delivery.