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B&K Sonata M200 + Polk Rti A9’s

I came across a pair of the B&K Sonata M200 mono blocks for $450 (Canadian). 
I currently have a pair of the Polk Rti A9’s hooked up directly to an AVR (Onkyo 818)
i was wondering if anyone has had any experience with these amps and these speakers and can chime in. I know thes speakers are very power hungry and I just don’t know if these amps will be enough. I’ve been holding out for an Emotiva XPA-DR2 which puts out 550wpc. Should I keep holding?
rafa1478
loomisjohnson
1,943 posts
 
i have the m200s ($450 is an excellent price btw) and they will be more than enough for your polks and a whole different level than your avr.
rafa1478 OP
2 posts
 
thanks  for your reply LoomisJohnson. 
  What kind of difference can I expect to hear,  Will it really be that much? I know my receiver is just a receiver but as I understand it’s a pretty beefy one , no?

loomisjohnson
1,943 posts
 
i would expect a night-and-day difference, both because you m200s are more powerful and because they're  higher-quality amps than those in your avr, which have compromised power supplies, less robust transformers, etc. typically i'd expect more low end control and overall detail.
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