Denon to Parasound


I’m looking to move on from my denon amps. Was previously considering the new crown drive ores but decided to pass after research. I want the sound of my recently sold technics sa 5760(first amp) back.

Looking at the Parasound a23. Max budget is $1000 msrp. Seems like Parasound would be a natural upgrade. I don’t want an emotiva or outlaw amp. Open to other entry level audio brands in this budget.

Am I going in the right direction? My setup is denon 4520ci->bluejeanscable->revel f12s & revel b1 subwoofer.

Would I notice improvement moving from a 150 watt per channel flagship denon to an audiophile 125 watt per channel separate? The denon was $2,500 msrp. Thoughts? If not, how much do I need to spend to get improved and similar power?
torriderword2
I have Revel F-12's with a Parasound P5 pre and a A21 amp and love the combination, and some ways the A21 is amp overkill ( is that possible?). I haven't listened to a A23, but being the A21's little brother it sounds like a very good fit.
@762matt have u tried the f12s with a receiver? Do you ever run out of volume with the a21?

I find the f12s to be flat with fatiguing highs with my denon. Do the revels feel lively with nice mid bass with the a21 or still neutral like my experience?
I find the f12s to be flat with fatiguing highs with my denon. 
I bet the parasound amp alone makes little to no difference.  These speakers are quite sensitive and don't need a lot of juice, so it is not a power/current issue.  Maybe placement or room acoustics.  How big is the room and how far is your listening position? 
@rotarius it's only about 17x17 with 9 foot ceilings, but the back is open(no wall). Mlp is about 12 feet away. Perhaps it is just placement. Any guidelines?
Cardas has a good write up on room setup. 
www.cardas.com/room_setup_main.php
I had the F12's a few years back and I never felt the need to use a high powered amp, your set up with no back wall might be adding to your problem.  Try some nearfield listening and see if you like the tonal character of the speakers.