It's locked up on me and otherwise failed for quite some time. Pulling the power for a few moments has fixed it up until yesterday when it got a lot worse. Should I get it fixed? What's the max I should spend on it or what should I get to replace it? Has a release date been announced for the 80.4 yet? Will they be adding more subwoofer outputs? I could use 4 plus one tuned for tactile transducers.