For some time now I've had an intermitant problem with my 777. Since it is not doing it all the time I've been reluctant to have it looked at. The 5 year warranty only has about a year to go (as all of you know who bought this player in its' short build period.) so I should get on top of this. Anyway, here's what happens. Everything is sounding great when all of a sudden it sounds like the bottom end of the sound is missing from the speakers. This can happen while I'm using the amp or may just be that way the next time I turn it on. The speakers sound harsh and cutting (all of them, not just one)because the bottom is missing. It doesn't make any difference if I use different speakers. I can play with the EQ, cutting back on the highs until the sound comes back to maybe just "fair" but you can tell something is missing. Then just as mysteriously, after a while - maybe not until the next time I turn the receiver on, the bottom comes back and I have to go to the EQ and put the highs back. Then all is well for awhile again. It has been happening more and more frequently and that's why I probably should get it checked out. I really hate to have anyone mess with this receiver but I won't have any choice. The sub doesn't seem to be affected. The last time it did this, I raised the crossover from 80 to 90 and got some of the bottom back. Shortly thereafter the sound came back and I could go back to 80hz. Does anyone have any idea what this could be?