I was trying out DVD-A using the direct mode on my AVR300. I went in to adjust the channel levels in my DV79. I was still playing music at the time and didn't think it would make any difference. I started adding to the left channel when all of a sudden the volume jumps from 60db to what sounded like 80db+. Reducing the level didn't work so I had to turn my receiver off. I was really concerned that the volume could have damaged my speakers. Is this a known bug? Or did I miss something in the manual about adjusting levels?