Halcro,
It's certainly not my intent to turn anyone off the UNIverse. Far from it! I agree with you, Radicalsteve and many others that it stands above any cartridge I've heard for reproducing like a master tape (nicely put by the way).
My stating how critically we adjust may seem offputting to some, I guess it's just what we do. We hear the differences (Dan_Ed, Swampwalker and Raul have heard them too) so we adjust. Whether they, you or anyone else does is up to them, and certainly not worth worrying about.
Last night we listened for hours, just for pleasure, not doing any sort of audiophile testing or comparisons. The program was a bit mixed:
Beethoven Symphony #2, Hogwood/AAM, L'oiseau Lyre
'Les Plaisir de Renaissance', Dansons et Chansons, luth & flutes a bec with counter-tenor, Harmonia Mundi (France)
Beatles, 'Abbey Road', MFSL
The Biggs Bach Book, E. Power Biggs, Columbia Masterworks
'Trio', Dolly Parton, Linda Rondstadt, Emmy Lou Harris, Warner Brothers
The bass on Abbey Road and on Biggs' organ was tremendous, especially considering the limited dynamics of the Masterworks pressing. So were the drums on the Beethoven.
Did we adjust VTA for each LP? Yes, but we've done that for years, starting before we ever owned a ZYX. Other cartridges have needed VTA "right" more than the UNIverse. Our Shelter 901's frequency balance changed alot with arm height. No ZYX ever makes gross errors like that, VTA just gets the timing between fundamentals and harmonics right.
Did I tweak VTF occasionally, by .005g or less, to get the sonic balance just right? Yes. Our ears say to do it so we do. For us, optimal VTF is so critical that it can change from LP to LP, but this is because we play on the knife's edge of mistracking. Our visitors always hear the right spot when I demonstrate, but they might not notice or care if I just set it say .1 gram heavier and ignored it. We notice, so we adjust. Call us fanatics. :-)