I've been demonstrated on two different occasions, Panzerholz Headshells of two different designs on two different TA's, using the same TT>Cart in the same system.
Each TA substantially changed their sonic using the P'holz.
The Prototype TA, with a P'holz HS added in place of the earlier used HS material improved in way that is describable as night/day.
It won't be long before the awaited TA comparisons are to commence, I have been discussing the timeline for the opportunity to create this, earlier today with the TA's designer/builder.
I have some side ideas for this experience, that will be included in host of demo's that will most likely be done across a few sessions.
As a side idea, and one already voiced, I will be able to experience two identical TA's (my own one and my friends), used on the Dual Arm TT that has been made for this period of demo's. Where one will have a Magnesium HS and the other a P'holz HS, with similar usage hours on the Identical Model Cart's to be mounted.
I recently became an owner of a P'holz HS that was produced for me, but due to packing the Vinyl Source away, have not used it in my own set up.