It is entirely possible to optimize the TT for one genre over another. Much of that is merely cartridge /tonearm selection. Though the selected cartridge/tonearm may be entirely fine in all other genre's, it has been voiced by its owner for one particular genre.I'd like to know how you can optimize a TT for 80's rock as opposed to 70s' rock.
With regard to the motor unit, all genre's will benefit from a platter spin that doesn't change its pace, however minutely, in response to modulated stylus drag. But it will be more apparent when reproducing rock.
Modulated stylus drag is likely more audible solo piano FWIW.
Some phono cartridges will describe the texture and tones of an acoustic instrument better than others. But will the same cartridge that so deliciously described the wood inside the soundbox of that Martin guitar also lend itself toward getting that over-cooked Jimmy Page electric guitar solo rendered so that the listener perceives its reality?Yes.
Some turntables will deliver this compulsion better than others. All you have to do is hear this to know it.This is 100% correct. And audible with all genres of music.
Atma-Sphere is wrong, once again. But if he wants to convince some of us he should try and prove what he says.Actually Inna, you are once again wrong. Here's how:
Next thing he might say is that amp is an amp, and if it's good it's equally good for everything. Then he will move to speakers. And after that to guitars. Martin guitar would not be best for flamenco or the kind of music that John McLaughlin used to play. John himself said it, I am just repeating it.
There is a lot of art in designing good equipment, not only "stupid" science. But a lot of science too.
Amps and speakers are for music reproduction. Guitars are not. They are a source of music. You are engaging in a Strawman argument, which is a logical fallacy. The use of a logical fallacy in any argument renders the conclusion to be false. That's why they call it a 'fallacy'.
Amps and speakers do behave differently BTW, which is why I make tube amps. But the goal is to reproduce the signal applied to them as accurately as possible and any good speaker design has that at heart as well.
FWIW I play in a band, one of the louder ones in the Twin Cities area. Its not like I'm any stranger to rock, and I've also played in orchestras here in town including appearances with the Minnesota Orchestra.

