Best amps for everything EXCEPT bass

How about Try a real Preamp in there.
 It is even more important than the amps.
 I predict you will find its a whole new system.
 Trying random amps without a decent preamp will be chasing your tail.
  JohnnyR

Advice from JohnnyR is absolutely wise and rational.  Unless it's hyperbole,  cajunbaseball has stated the Quicksilver V4 sounds "outstanding". If this is true, why replace it? I believe that the addition of a top tier preamplifier could result in substantial improvement. Again this is under the assumption that the V4 and speaker pairing is truly outstanding. The Ayre amplifier may certainly sound different but not necessarily better than the current V4. 
Charles 

As usual, brother John is correct; I need to upgrade my pre. He is the one who told me to get a pre and not use the DAC as a pre. Adding even the cheap Schiit Freya improved the sound dramatically.

Why change? I use my amps for music, TV and movies. A tube change costs between $600 and $1,000. Why decrease the lifespan of tubes on HT? Sooooo, 

I see three options:  1) keep the Q4s, get a new pre, change tubes annually or so and shut up; 2) get a relatively cheap SS amp and use it for movies and sports only and keep the Q4s for music only; 3) get an Ayre or other SS amp that can serve both purposes and upgrade the pre. 

More comments are welcomed. 

PS - Since I have Treo CT speakers and not Quatros, what about the Ayre Integrated, the AX-5 Twenty????

I was just reading about the Ayres integrated.  I can't see any reason that wouldn't work well for you!