Current setup is 5.1 using NHT SuperZero 2.0s (5) powered by a Denon 4311ci receiver and an HSU STF-2 sub. My room measures 14.5(L) x 10.5(W) x 8.9(H). Purchased a 4k TV and looking to purchase the Denon avr-x3600h to add video switching as well as adding 11 channel Atmos processing. Would like to get any recommendations/suggestions of an eternal amplifier that would be good to power the front left and right SuperZero 2.0s (75w, 8ohm). I have an old Onkyo m-282 amplifier but not sure due to its age if it would be a good fit. Plan on picking up additional SuperZero 2.1's from Amazon to complete a 7.1.4 setup. Thanks in advance!