Shallow as I am, I am sure that design of the amp outer box would sway me more to make a purchasing decision than idle losses.
Slovak HT: TCL 98x955 mini LED with 5k zones and 5k nits brightness / 9.4.4 system in 6000+cft loft / Marantz AV-10 processor / Bryston 4B SST powering 2x Heco La Diva LR towers @300Wpc into 8ohm / Bryston 4B SST @300W into 8 ohm powering Revel C426BE centre / 5x Rotel RB 1070 @130Wpc into 8 ohm powering 6x Gallo Reference 3.1 towers SLR, FWLR, SBLR and 4x GoldenEar AON 3 front and back LR Atmos wall mounted bookshelves / LFE powered subs 2x SVS PC 4000 front LR and 2x Arendal 1723 2V back / Dirac ART room correction Preset 2 / Audyssey MultEX-Q room correction and bass management with LFE+Main and LFE distribution Preset 1 (not used any more) / Bunch of racks, cables and power stuff to connect it, and a minimal effort to make them play nicely as a team - thanks to ART.
Dubai HT: Sony 83" A90J OLED / 7.2.4 system in 2800cft room / Denon 6700H in pre-amp mode / 2x Parasound A 52+ 5ch amps @180Wpc / 1x bridged Parasound A23+ 500W for center / 4xKlipsch RP-8060FA / 2x Klipsch RP-5000 / Klipsch RC-64III center / 2x 1200 W Arendal 1723 2V sub / 2 AC Infinity fans / Fully untreated HT bedroom with reasonable acoustics / Bunch of cables and power stuff to connect it and make it all work.