Yes, these more "mid/hifi" type AV products can certainly be nice and clean sounding, if even "musical" sounding. As an audiophile myself over the years, I too appreciate higher quality ambitious equipment options. Problem, however, with small domestic spaces is that the acoustics pulls down what would otherwise be great sound potential, if you don't address the issues! And several of todays AV pre/pro's and receivers offer superb DSP room correction (*Aydyssey, for one), and at least good parametric EQ features. Believe me, I really wish some of the essoteric audio/videophile minded companies offered AT LEAST some kind NECESSARY EQ integration for their products! Unfortunately, this isn't the case, often. (Heck. I think Krell has only recently offered some much needed room EQ in the processors)
Either way, if you simply go with some otherwise good sounding NAD, Arcam, Oppo, etc system- that negates any type of EQ feature in the mix - half of the problem you'll be dealing with is nasty bass peaks, slap echo, and reflection smearing issues that will color the crap out of your sound quality, and make for less than accurate audiophile grade sound quality, anyway!
That all said, todays even entry level Denon's, Harman Kardon's, Pioneer's, etc, AV receivers, offer a great deal of sound performance, digital sound processing (24/196 dac's and Dolby/DTS Master,+ sound), and pretty clean preamp sections for the money!- and even better up the price chain over $1000 mark! This is something to consider. All-in-one power and processing, plus the ability to upgrade to a bit more dynamics and refinement, if you use them as a "pre/pro", and add a multi channel budet amp to run the mains and center speakers.
No, the AV receiver route isn't the end-all of sound quality. And I think any seriouis audiphile can tell you that. But, some of these AV priese, nonetheless, are still pretty clean sounding on their own, and offer SUPERB digital processing and features for next to nothing!
And when you consider how good the processing has gotten, plus the overall pre section and acceptable amp section (ok, for running speakers as "small" , anyway), the cost/$$ performance ratio- especially used - they're hard to ignore if you're simply looking for "movie sound", with occasional audio!
If, however, you do go separates, you'll get potentially better dynamic capabilities (potentially), better separation, and lower noise floor, and musicality, often. However, you get more components and wires to deal with, plus rack space, too. Separates will also usually not let you get into lots of extra - and necessary - EQ processing features, until you spend quite a bit more, typically! (something like Emotiva UmC-1 might have a working EQ, but not sure from it's history of issues). That's about the gyst of it.
I know right now, I can go buy a used Harman Kardon AVR354 for $250 range, which offers superb,clear, detailed, and punchy sound quality, attached from the digital inputs, and posibly add something like a Parasond HCA1205a for $400 amplifier, used, and get very smooth, dynamic, pretty nice detail, and warm forgiving, full sound from my system for not so much money! ...and it will sound great with your Dreamers, I'm certain.
Yes, and there's lots of other amp options, receiver or preamp options, for similar results!
The AV receiver route, especially considering you are running your Dreamies at 80hz (yes, 80!) crossover, ideally, is gunna get you most of the way there with so many of the used AV receiver choices you'll find of late on the market! In fact, I'm sure you'd be more than happy, with some $1000 (*or less) used 2010-2012 model Denon to match the sonic characteristics of your speaker, and also offer GREAT digital processing and Aydyssey room correction!..plus you can add a better amplifier section later, if you really care to upgrade the power later. Some more thoughts.
Thats what I have to say, anyway. Since your mostly movies, then the stronger Denon can definitely give you all of what you'll need to make the Totems sound PLENTY good, and also includes the features you'll need (yes, I'll take Audyssey - or at least parametric EQ - over simply possibly a bit more pure sounding components, WITHOUT DSP room eq capabilities, yes!!), the latest digital DAC's, video switching (if you change your mind), analog pre-amp outputs, etc.
So, anyway, my first thoughts for a small/medium sized room is "how can I fix the acoustics" -after I work on setup/speakers and seating placements. Then, I'll figure what I have to spend to get the features I need, all while looking for more audiohile grade purity if I can.
Hope this helps