Suggestions on Pre Amp/Amp or Integrated Amp

I forgot to say, IF you might use the 2 channel amp for other 2 channel sources, then you want an Integrated Amp, remote volume control is nice. It will need a way to pass the AVR's front pre-outs to it's amp, bypassing it's preamp section, bypassing it's volume control. HT Bypass, or Pre-In.

I have an Anthem MRX 540 (integrated and rear speakers) and MCA 325 (front speakers).  Total retail is $1,899 and $2,699.  A bit unconventional, but sounds great.

@bucg8torfan 

tighter, punchier bass, clean power, room correction and more watts

Power could be sufficient in a small room if you set your speakers to small, which most do. Given the budget, a B&W 703 S3 (or equivalent brand) on sale or used + a generic class D module (VTV HypexNC252MP) will give you what you want for mixed movie/music.

The 703 will offer a significantly wider and taller sound stage while the amp will give you more power.

If you had said I want a larger, more delicate sound, then your original plan for an integrated amp with the same speakers works. The 703 does it in a natural way while the amp/preamp is more psycho-acoustic. I'm not sure you can find a separate pre/pro + amp for under $5k new.

 I'm not sure you can find a separate pre/pro + amp for under $5k new

why not?

IF it was me, I would

1. pick an integrated amp with pre-in or ht bypass

2. use it with the existing Marantz (unless you really don't like it)

because, that will work with the existing Marantz for Video 5.1, and sets you up for separate and better power for the front L & R, better for them, and lessens the load on the Marantz, or any future AVR.

and, is ready for other 2 channel sources, like streaming, cd, even vinyl if you have the room for it and inclination

keep in mind, this is what you would/should do even if you buy a new AVR (with front pre-out)