External amplification is something I have just started researching, but I'm starting to be more interested in having the extra power on tap for dynamic peaks. More and more I'm starting to think that the extra power, along with sensitive speakers that can handle the power, are what sets the really great systems apart. There is obviously a reason that some of the most knowledgeable members have 100dB+ sensitive speakers combined with 4-800+ watts on tap. It's still surprising how dynamic and powerful things are in person(without being uncomfortably loud) compared to how they sound played back on speakers at home.
A high quality external amp is also something that doesn't necessarily get outdated or need upgrading or replacing as AVR's or processors do over time.
I initially started looking at the XPA-3 and Monolith 3X(2-300w/ch @ 8r), but at that price point, I figure I might as well get even more dynamic reserves instead of just a modest increase as those two would offer. The power levels offered by the D-sonic amps are incredible and, compared to other brands, seems like the best value that I have seen.
There are much more detailed specs available on D-sonics website(didn't realize this at first) that come straight from the amp module manufacturer. A lot of them are still over my head as far as fully comprehending what is really important, but that just means its time to do more reading and research until it all clicks.
Although I'm not ready to pull the trigger on an amp yet, the M3a-1200-3 is my top contender at this point. I've ruled out Class D Audio, as, although their prices are quite low, they don't offer a 3-channel nor nearly as much power. Again, if I'm going to spend the money, might as well go to the top imo.
I'll be driving a pair of DIYSG HTM-8's and a Fusion 8 MTM center channel with a 10-12' listening distance.
From the little I've read up on the topic, the things that matter a lot are power output, distortion, frequency response, noise floor, SNR, IMD. Channel separation(not sure what this means). I'd be tempted to send one to Notnyt(if he were interested) for testing if I bought one just to see what he comes up with as I feel like he has a really solid grasp on electronics(certainly compared to me).
Anyone know if the 3 channels still come in the narrow chassis, or the regular multi channel chassis that is upgradeable?