I would like to add an additional power amp to make for 9.1/9.2. I am looking for something small, slim-line & unobtrusive as it is only for a couple of surrounds & therefore I do not want to spend too much. Another poster stated he had great success with the Emotiva Mini-X (which would be ideal size wise) but sadly these are not available in the UK.
I have also noticed that the 818 US & UK models have different power specs for some reason - US stated at 135 watts per channel at 8 Ohms but the UK model states 180 watts at 6 Ohms but with only one channel driven, TBH, this has me very confused as I cannot tell what the UK model "per channel" wattage is & my speakers are 8 Ohms - I do not know what sort of power an external amp should have to match that of a UK 818.
I was also looking at the Onkyo M-5010 & M-282 thinking there would be no matching issues since they are from the same brand but alas, these are not available in the UK either.
As a stop gap measure, I was wondering if something like a Rotel RB-980BX (50 Watts PC at 8 Ohms), RB970BX (2 x 60 Watts at 8 Ohms) or RB907BX (2 x 60 Watts at 8 Ohms) or similar would work well - I like them as they are somewhat low profile & would hopefully not look too out of place with the 818 and can be had used for a reasonable price. My concern is that these are quite old models (probably 1980's) & that technology might be too out of date compared with that of the 818 & cause potential issues?
I am not too clued up on these things so would be very grateful for some help & advice!