Maybe too detailed

There is no such thing as too much detail. That's like saying there's too much darkness in the night.

Since you did not list most of your system inventory you are probably experiencing the results of a system exhibiting more detail but not utilizing proper line conditioning and especially not utilizing proper vibration management.

For if you had these two elements properly addressed you most likely would have known their foundational significance and would have listed them in your original post to let the reader know those areas are probably not a potential issue. Or perhaps you would not have posted at all.

You may well also be describing the affects of much time-smear in your ics and scs and/or perhaps inferior speakers/tweeters.

Moreover, if your system is generally weak in the lower frequencies, then such an unbalanced presentation can give the perception that there is too much detail or the highs are too bright. Combine that with the other potential weaknesses listed above.

But based on what little you provided I would guess it's potentially a combination of your entire system minus the amp.

That should help narrow things down a bit. :)

But the fact that you claim there could be 'too much' detail tells me that at least you're on the right track because the real magic is buried in the detail. Now you just need to clean it up.

So rather than squash that potentially newfound detail (even though it may be fatiguing at the moment), start experimenting with some high-end line conditioners (stay away from the most popular brand), try some different ics and scs (stay away from silver at least for now), and see if you can turn that potentially overly bright detail into something really musical.

-IMO

Dazzdx, you are correct as to how it should sound. But as I'm sure you know there are a handful of bottlenecks present in every last system ie dirty AC from the street, uncontrolled vibrations, tweeters that flatten out or break up under stress, having enough juice for the amps, ics and scs loaded with time time-smear, etc., etc.. And that does not even include inferior components, component synergy, room acoustics, etc..

So if some potential detail rears its ugly head out of sequence or too prematurely in the evolutionary process, then the first thing we want to do is call it evil and squash it rather than nurture it.

Audioengr, I have to disagree with your statement that all stock gear have some sibilance and harshness.

On the other hand, if one were to say all electronic components are susceptible to and affected by dirty AC and uncontrolled resonance energy and just a couple of the effects include negative sibilance and harshness then I think that would be much more accurate.

I don't think this is splitting hairs. Rather, I think it has everything to do with determining the root cause and if we don't know what the root cause is then the chances are pretty good that we'll never properly address it and move forward.

-IMO