Got a tech question for Sound & Vision? Email us at AskSandV@gmail.com Q I’m wondering which upgrade will make a more significant audible difference in my home theater: upgrading the power amplifier or treating room acoustics? My room measures 17 x 16 x 8.5 feet and has tile floors that are covered by a large rug. I have a 7.2.4 setup powered by an Anthem MRX 1140 AV receiver.