Originally Posted by SouthernCA
It will be helpful if people describe the amp capabilities or specifications rather than its cost to define what works the best.
Emotiva BasX A-300 = 2 channel @ 150w/ch
Emotiva BasX A-500 = 5 channel @ 110w/ch
Marantz MM7025 = 2 channel @ 140w/ch
NAD C275BEE = 2 channel @ 150w/ch
I don't know about the Emotiva or Marantz, but am very familiar with the C275BBE from NAD. That one can be very underrated as it has much higher dynamic power ratings. Marantz tends to be a little (10%) underrated for the nominal rating, but doesn't have nearly the dynamic power of the NAD.
I've seen some reports of the Emotiva's failing, but purely anecdotal evidence there.
The main thing that kept me from buying a power amp to this point is that I so very rarely run my AVR (NAD T758v3) anywhere near its max. In my two-channel office system, I had expected to go with separate pre-amp/DAC and power amp but was frustrated to find I'd need other equipment (MiniDSP, UMke1, and REW app) to get control over response. NAD hit a home run for me with the M10 because I got all I wanted and needed in one little box.
There may still be a day when I add a 5 or 7 channel power amp to the living room setup, just to take the load off the receiver. I might add a second sub first though, as I have a seat or two in the room that get very little bass. Fortunately, rare is the day I have anyone sitting there.
KEF R500, R200C, R100, R50, SVS SB2000 sub, NAD T758v3 AVR, LG UP875 4K BlueRay, Samsung UN55JU6500F 4K LED TV, KEF M500 headphones, Sony CDP-CE500 CD changer. Office: NAD M10, KEF LS50, KEF Kube 10b, Pro-Ject RPM1 TT w/ Ortofon 2M Red. Guest room: Hafler 300 L-R, KEF Reference Model 100 center, KEF iQ10 surrounds, modded M&K V-90 sub, Bluesound Vault 2.