B&W 803 D3 speakers - which amp?

IMHO the 452 will make a HUGE dif in the dynamics and bass even if the volume isn't loud....   its shouldn't be hard to find a dealer that has 452 and 803's on display  both pretty common together at least around the NYC and tristate where I am.  If you are in the NY/NJ area let me know and can prob help 

B&W 803 D3 speakers - which amp?

An "impedance" vs "-phase angle" graph has never been done on the 803’s, but:
Here are the impedance phase graphs of all of the 800 range, no reason to believe the 803 won’t be the same, which are all very hard to drive in the bass (70hz - 900hz) given their measured impedance and also when it’s combined with -phase angle (EPDR) which can look even lower to the amp that hust the impedance alone.

These speakers need amps that have good current delivery, an owner should seek out amps the "can come close" to doubling the 8ohm wattage spec for each halving of the impedance, if they want to get the very best from the bass as well.
EG:
8ohms= 100w
4ohms= 200w
2ohms= 400w

802 https://www.stereophile.com/images/616BW802fig1.jpg

800 https://www.stereophile.com/images/511B800fig1.jpg

804 http://www.prespeaker.com/images/201702/B&W-804-imp-thumb-650xauto-15553.png

801 https://www.stereophile.com/images/archivesart/801fig1.jpg

Thanks again for everyones input...I forgot to mention that I currently have the 803's bi-amped from the MC207 which I think is helping them sound pretty good.  But based off all the suggestions I think I will talk with my local dealer and see about doing a in home demo with either a MC452 or a MC462.

I think I will talk with my local dealer

Unless they’re blood, they’ll just sell you what they want, there’s no way they will say sorry can’t help out in this case if they don’t have the correct amp.

Just educated yourself in reading the above impedance/phase graphs I posted, which I think may have gone over your head, as you didn’t comment on them.
And then you’ll be able to make an informed decision without any bias coming into it. Google is your learning friend, so are Stereophile’s comments in their bench test pages on impedance v -phase graphs of speakers they test, take a little time to learn it and you’ll not only get the right amp, but your ears will thank you as well.

And don’t listen to anyone’s recommendation on amps, unless their first question before answering is "what speakers is it going to drive" and they know the impedance/-phase angle of them.

Cheers George

@mluters

What is your preamp? Are you doing a separate dedicated stereo preamp with HT bypass and an AV pre pro or just using a single AV pre pro for both your stereo music and surround movie playbacks?

For your front 803 D3 speakers I would recommend getting a good quality stereo or monoblock amps and keep your Mac multi-channel amp to drive your center and surround speakers. The Mac MC462, MC452 or the MC301 monoblocks will be a good choice and will be a step up from your Mac multi-channel amp. Classe Delta series class AB amps will pair really well with your B&W 803 D3. Either the Classe CA-2300 stereo amp or the CAM-300 monoblock amps will be a better choice for your speakers than the Mac imo.

The B&W 800 series D3 were voiced using these Classe Delta series class AB amplifications. They have great synergy together and will sound excellent together.
These Classe Delta series products have been discontinued last year and can be had at discounted after market prices in used markets. You just need to find one. These Classe Delta series amps original retail prices were similar to the Mac amps. The Classe CAM-300 monoblocks were priced exactly the same as the Mac MC301 monoblocks. And the Classe CAM 600 monoblocks were priced exactly the same as the Mac MC601 or the MC611 monoblocks. But these Classe Delta series amps were discontinued products and nowaday can be had quite a bit cheaper than the brand new current model Mac amps.

Another amps that will sound good on your B&W 803 D3 would be the Naim 500 series stereo power amp with a separate PSU but this will be out of your price range. Mark Levinson amps will be a another good choice for your speakers too. Even the big flagship stereo power amp from Rotel called the RB-1590 stereo power amp will be another good candidate for your B&W 803 D3. The Rotel RB-1590 retails for only $3k and this amp is a dual monoural configuration it has separate power supply for each channel but it isn’t entirely dual mono configuration.
Rotel & B&W will pair really well together too and will sound good together.