Not great news for the Cambridge Audio MXW70, whilst the front fascia and general aesthetics are very nice, it falls short in other ways compared to the Topping PA7.
1: The rest of the housing feels cheaper pressed Alu vs the thicker CNC machined thicker housing of the PA7, only the front panel is the standout high quality material on the MXW70. Not a problem as the front panel is what you see the most and touch I guess. The MXW70 does look more "high-end" vs the plastic fascia PA7 though.
2: The power LED is brighter than I expected. It's bright enough to be distracting in dimmer lighting when gaming or watching something. In standby mode it gets dimmer and is about the same brightness as the PA7 LED when that is in normal active mode.
3: The speaker binding posts on the PA7 look and feel more expensive.
4: MXW70 is smaller than I expected, but still much larger than the PA7 in depth.
5: The sound signature between both is noticeably different and immediately obvious. Midrange vocals on the PA7 have more of a natural timbre and the soundstage is a bit wider in this region of the FR as well. PA7 is more musical/alive if that makes sense which is exactly why I like the PA7, the MXW70 by comparison has that Cambridge Audio house-sound that I am now reminded of when I had a CA integrated amp back in the day and years later tried out a pair of the brand's 3-way floortsanders. both of which I returned some time later for these same reasons compared to my then Tannoy M3 Cherry speakers and NAD C320 Bee amp.
So at its original price of £500, the PA7 sounds better and is built nicer than the MXW70, now at its £350 it's an even better bargain.
I will just have to tolerate the massive power brick and route my cabling around this annoyance lol.
Some pics:
I did some further looking up on why these differences might be so obvious between 2 class D amps that offer power not a million miles apart and on speakers that are relatively easy going at 8 ohms and 90W, this brought me to this video: