I would guess it would or could come down to if the A2 is worth the $1000 cost over either the RPA-2 or XPA-2. I highly doubt it. I'm using a Parasound 2205AT and would choose an Emotiva over it if I could do it over again. Before I bought the 2205 I auditioned the Anthem 5 channel amp that was a match for the 2205. I chose the 2205. There doesn't seem to be enough difference in the specs to warrant the extra money spent IMHO.
It is worth noting that the XPA-2 does double it's output into 4 ohms (250 wpc to 500 wpc), while the anthem only increases 50% (200 wpc to 300 wpc). So the XPA-2 does get closer to ideal amp performance than the Anthem does and this does generally indicated a better amp (or at least greater current reserves) to me.
The RPA-2 increases from 200 wpc to 350 FWIW. It's class H, which does run cooler and some people seem to prefer for some reason. It also has cool looking VU meters on the front.
The difference in the two Emotiva amps. The RPA-2 uses 2 toroidal power supplies and is a dual monoblock Class H design. Weight is 60 lbs. Runs cooler and also has analog Vu meters. XPA-2 is a Class A/B monster(wt. of 80lbs.) and uses digital VU meters. It does run a little warmer but not hot. Go to Emotiva website to collect all the info needed to make your decision when comparing against your choices of either the A2 or one of the Emotiva's.
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