i currently have the outlaw 7075 Amp and 970 and my speakers are Aperion Audio 533PT's up front, 632 in wall surrounds and a 533 aperion VAC Center. my room size is 15x 20 with 10 foot ceilings. my system sounds great, but if i was to upgrade my amp to the 7125 or the 7500 would it make a big difference in soud quality with my room size and aperion speakers taken into consideration? how about if i eventually upgrade to the 990? big difference given my room and speakers (maybe overkill for my speakers), or would it be noticeable on paper only? I don't play my system that loud anyway. what do you guys think?

Some other Aperion owners may be able to offer some good first-hand feedback. The Aperions don't appear to be particularly difficult loads to drive. I'd expect that either upgrade would yield subtle improvements rather than dramatic ones - especially at moderate volumes.