Most of the cinemas I'm familiar with use entry level professional QSC amps... the RMX series. Entry level QSC amps are very reliable and cheap. As far as sound goes in the movie theaters.. everything always sounds clean to me, but their speakers never seem to disappear like my speakers do in my audio room. Anyway, I don't let that loud shit distract me from enjoying the movie... I actually kind of like it. BTW, I thought Interstellar was a really good movie.. I actually enjoyed it immensely!
Do you enjoy the sound at your local Theater Plex?
Can you tell what kind of audio system is used? Is it "audiophile" sound quality?