They do make a couple (somewhat conflicting in terms of max power) points in the .pdf manual.
"While the sensitivity is moderated to facilitate the extended bass, the system requires a
substantial amplifier with a recommendation of 200W or more to achieve its full potential."
"Note: OPAL1 is a...
Not really a consideration for me. The truly hideous ones are well beyond my budget. My wife has opinions but understands sound is my passion so doesn’t feel the need to intercede in all matters.
I've pondered the comparison at this approximate price point as well.
https://www.audiosciencereview.com/forum/index.php?threads/march-audio-sointuva.26085/page-18#post-1790093
The ability to bypass the buffer was a principal determinant (along with the slim form-factor) in my purchasing a pair of Audiophonics MPA-M400ET mono amps. Based on Amir's review, should have been no problem for my Topping Pre90. When I tried it, though, the sound was distinctly worse -...
I've often had the thought that Topping could make a perfectly clean, "black box" crossover. Wouldn't even need adjustability - 80Hz, 24dB/oct could cover the vast majority of needs.
That's very cool! Granted, it's typically a once-and-done setting but still nice to avoid screws. I've been using a pair of the predecessor MPA-M400ET for a little over a year and they've been fantastic and trouble-free. Glad I got them when I did since the new wider form-factor would not have...