I wouldn't buy a reciever to do an amps job. I personally own the Dayton MA1240, its a solid amplifier. It hands down has more clean power than my old Pioneer VSX1015-TX which is a thx select rated amplifier with "120w RMS/channel" even though the power draw off the wall is only 500w... lol.
The amp is great, has a small fan in it, its not loud, but i can hear it if im listening to really quiet music to fall asleep. Can use a bit more heatsinking, as the chassis gets a bit warm with extended use.
Aside from that, i've had it running 8 of the channels in bridged mono, to 4 subwoofers, (these subs were 4 ohm, and the amp ran well at 4 ohm, and bridged. even though its not supposed to) As well as used the other 4 channels bridged to power various custom speakers at a DIY event, With loads ranging from 4 ohm to 8 ohm.
This amp was incredibly useful, there was very little playing required to get everything level matched. We used a behringer DEQ to take the optical SPDIF in, and convert it to AES. as well as used the RTA to level match all of the subwoofers for a head to head comparison. A Behringer DCX2496 was used in digital mode as the low pass for the subs, and high pass for the diy speakers. Also the DCX was able to set high-pass for the subs.
This setup is worth its weight in gold. $450 amp, and 2x $300 behringer peices, and you've got more control than you know what to do with.