Seeking more 3d imaging, deeper/wider soundstage


I'm considering replacing either my amp or my pre. My system is profiled in my system link. Which do you think would improve soundstage/imaging more:
Replace the P3? I'd consider used McCormack, or a passive line stage, but my amp clips at 5v, which is what my DAC puts out when using the XLR outputs, and I'd like to try those someday...not sure a passive is a good fit for my system? Plus I require a remote. That's a deal breaker.
Replace the Rotel RB-1080? I'd consider parasound (a21 is a bit too pricey for me), used McCormack, odyssey, maybe even older krell or classe. I want XLR inputs tho.
Budget is $900-$1200 for either. Music spans the full gamut, excluding hip hop and country. Room is small, 12x12x8. I'm going to throw up some affordable foam acoustic absorption this summer (foam factory). Thnx in advance.
realremo
I have looked at prima Luna's self-biasing amps, these have 4ohm taps and I think would push the quads better than some other tube products. But I am worried about a tube amp's ability to push my speakers. 6ohm nominal, 89db sensitivity.
I said it before: buy a used Primare 30.2 or 33.2 and buy a tube pre amp. You will get a combi which is able to give you control, sharp individual focus and a wide and deep stage. And an involving sound.
Magico is a very well made product and very good in this regard based on personal past auditions. Used prices here I have seen recently are coming down as well to the point where Magico used is more realistically competitive on price with other options as well.
I have the same speakers paired to a Marantz PM8004. They sit 2.25 feet from the side wall and 3 feet from the back walls. I have them toed in 20 degrees so that they aim right at my seating area. I get very good 3-d imaging as a result. My room is 10x13x10 but is it also heavily damped with carpet, draperies, and cd shelves. The Quads really work well with smaller rooms like ours.