Roger Russell, the online guru of all things McIntosh (and much more) has a page on Micro-Acoustics and the design of their cartridges. He states "The transducer elements were referred to as electrets, but were made of... piezoelectric material, lead-zirconium titanate."http://www.roger-russell.com/sonopg/mic ... cartridges
I have a low-hours 2002e I am going to be mounting up soon.
Rega RP3, TTPSU, Groovetracer delrin, reference subplatter & counterweight, Lim double pulley
Shelter 501-II with Soundsmith Level II, Heed Quasar