Amplifiers for B&W 803D/802D


I'm new to high end home audio (have extensive high end Pioneer ODR system in the car) and am looking for amps to pair with either B&W 803D or 802D. My local B&W dealer only sells Rotel and Classe and hasn't been able to set both amps up together so I can listen/switch between the two. Is there a significant difference in sound between these amps with these speakers and is it worth the expense? Are the Classe amps reliable long term? Has anyone heard B&W with Mcintosh amps? I listened to Mcintosh with Infinity speakers that sounded great but can't find a way to demo Mcintosh with B&W. Thanks a lot.
statusnine
Sorry Audphile1, I just looked it up and realized the PassLabs you mentioned are monoblock amps...my mistake.... so it sounds like in your opinion monos are really the way to go with these speakers. Are there any multichannel amps that would be suitable? multichannel gives me more flexibility for possible conversion to surround sound later on. How about bi-amping a 5x200 to get 400w a side? How would that compare to separate monos? My local dealer is really pushing the 5x200 Classe. Thanks again.
Statusnine, your first reply to Audphile1 were excellent questions, as IMO his comments were without merit and didn't make sense. The Pass amps he suggested are NOT mono-blocks, as you state in your second reply, they are two channel amps, just as the MC402, yet they are very good amps as well.

Take the time and go to your dealer and listen to each setup he suggests. You can determine if you really like it or not. Even better would be if he'd let you take home the setup you prefered best in the store to try, but speakers of that size are not always allowed out for loan.

If you go with the 802D's, I suggest mono blocks. Just my opinion.
Statusnine, McIntosh and Pass are very different amps.
X250.5 is a 2-ch amp, 250w/ch into 8ohms. It doubles into 4 ohms. It's a different design from MC402.
X250.5 provides about 36 watts/ch of pure class A which is great for low level listening. Also, the Pass amp is more dynamic, effortless and explosive than the McIntosh. MC402 is a fixed 400w/ch no matter the load. B&Ws will dip into a 3ohm territory where the X250.5 will have an advantage over MC402. I heard MC402 with 803D and own X250.5 and to me the X250.5 is a better performer.

Bottom line is - you got to do your own research which should not be limited to these forums. Listen to as many amps as possible and draw your conclusions from there.
Audphile brings up a good point about B&W's dipping down to 3ohm territory. The MC402 has 3 sets of taps on the back, 2ohm, 4ohm and 8ohm. Although B&W rates their speakers at 8ohm, you would not want to use the 8ohm taps, rather start with 4ohm; McIntosh recommended this to me when I was using B&W speakers because of the way they behave.
I never tried the 2ohm taps with my 802D's, which I now regret in light of the results another poster in another thread got with his (older) 801's when switching to the 2ohm taps.

I suspect your dealer could get some fine results with the Classe gear he sells; just let your ears be the judge.
Spectron Musician 3 SE - my friend with 802D has it. Midrange lush like (first class) tube amp and it is probably the best amplifier to drive speakers with difficult load- it has increadible control, stable up to 0.1 Ohms load, headroom with 3500 watts peak power over 500 msec.

Do internet research - it drive Martin Logan Summit, Audio Analyses ribbons, Magnaplanar 20.1 and non plananr like MBL 101

In January 2008 TAS issue there was excellent review, forgot what speakers were used and I know that in month or two Stereo Times will have rave review - speakers Apogees

I think with your speakers you must investigate this amplifier
Good Luck
Rafael