Ok, I built this system less than a week ago using the Gaming 7 motherboard. The first day I noticed the audio was really LOUD. Like I would have to set the volume to 10% for it to be at a normal sounding level. I chalked it up to the fact that I hadn't yet messed around with Creative's software (the mixer, EQ, etc.) and didn't think much of it at the time.
Then last night I was playing a game and suddenly I heard this weird distorted screeching sound mixed with everything sounding like it was underwater. A reboot fixed it but only temporarily. Later on I went to Youtube to listen to some music and noticed that the volume was really low. I messed around with all the mixers and EQ in the Creative suite but that didn't fix it. I wasn't getting any screeching, but the treble sounded really flushed out and the vocals were really low. It is nothing like my old system where everything sounded correct. My last board was a Gigabyte board that I bought in 2010 and its audio was far superior (Realtek chipset I think). That's pretty sad.
I figured I had a bad board and was getting ready to RMA it, but I found this thread through a google search. I am glad I am not alone. The bottom line is that I am not having just one problem, but am having multiple issues with the audio:
1) The screeching sound that someone posted a sample of -- that is EXACTLY what I am getting.
2) Weird volume levels randomly (either too loud or too quiet).
3) Terrible sounding treble and high notes. (Bass seems OK).
4) An underwater type of muffling to the audio at times.
All of these don't happen at once. It's usually just one at a time. Rebooting might fix it for a while but it always comes back. I really want this crap fixed. If it were a minor problem (like something wrong with a PCI slot) I could live with it. But when it's audio, I can't live with that. I have to have audio on a board that I payed $200 for.
I should have known better than to buy a board with Creative audio. Creative is a company that most real audiophiles cannot stand. Go to any audiophile internet forum and tell them you use a creative chipset or soundcard and they will laugh.