Hi sifus, currently I am using c2x. I am looking to upgrade it, do u guys have any recommendation? the standalone amplifier of c2x was placed near my wifi receiver, so sometimes the distortion occurs (i not sure is it called distortion, as I can listen the sound like "sssssssssssssssssssssssss" like this)

And I realize the speaker not so ohmm when I am watching the fighting and bomb scene. Totally cannot feel it.

budget wise is around 600 to 800.