Is it me or new audio gear is too perfect and give ear fatigue?

The 2 amps I use (swapping them from time to time) are a single ended tube amp by Dennis Had and a Pass XA-25, and the remarkable thing is how similar they sound although they're utterly different designs. I dislike distortion or noise from any gear (except purposefully distorted guitar amps) and prefer efficient speakers to minimize heavy lifting from an amp, but proper clean treble has gotta be there and any gear that does otherwise leaves the house and isn't invited back.

Try before you buy, have on home demo. Any decent dealer should afford you this facility. Saves a lot of heartache and most importantly money.

Perfect on paper, maybe. The ears say otherwise. 

@wturkey   Don't agree.  If the set-up has a near flat frequency response and low distortion then...............'it's you'.

Could be something mechanical in your ears - both ears?? - or your state of mind/mood at the time of listening.  Our brain responses to music vary according to psychological factors.  That's why it's not sensible to judge system sound changes without applying blind testing to weed out the merely psychological.

Unfortunately as our ears age our handling of elevated volume becomes altered.

the traditional view of the Fletcher Munson curves established using normal hearers does not correspond to those with aging ears. Specifically loudness growth  changes. This factors in with hypersensitivity to sound.

So equipment variables as well as changing in our auditory profile provides an arena that becomes difficult to resolve.