I tried to find the schematic of SR5011, I can't find it. But I found SR5010 and SR5012. Hopefully SR5011 is in between. I am commenting on SR5010 and SR5012.
You have to be worry about the power amp portion whether it can drive any speaker that is a little hard to drive. Both just have a lot of bells and whistles but the power amp is sub-par at best. Sorry. I attached the schematic of the power amp section, seems like both are very similar, I expect SR5011 to be the same. I kind of explain why I come to the conclusion. Mainly the output section has only ONE pair of output transistors. Natural damping factor is very low to start out. Then the gain of the amp is very low due to the very minimal design, it really does not help to boost the damping factor. A difficult speaker needs high damping factor to tame the impedance swing and this amp cannot have high damping factor.
I own a higher model JM Lab Facal, it's hard to drive.
I have no idea about the SVS Ultra. Can't comment on this one.
But usually the ball part is the 2 channel power amp should be about 50% to 60% of the speaker, I checked, SR5011 is about $750 on Amazon for a 7 ch amp. So the just take 750 X 2/7 = about $220 of the 2channels. It's just too low for a pair of Focal Aria 906 that is about $1500/pair. You can have problem with that.
BUT, talk is cheap, get a pair that you can easily return and try it. All these are just theory.
Own designed power amp, own designed preamp, JM LAB Spectral 913.1 speakers, Rythmik F12SE sub.
Not hooked up: Nakamichi Stasis PA-7 power amp, Velodyne VA1210 sub, Kef Reference Series center, Kef Bookshelf speaker, Monitor Audio bookshelf speaker, Infinity rear speakers. Acurus 3X200W amp.
Last edited by alan0354; 05-29-2019 at 08:46 PM.