Hello, Ever since I had my Av32 v.4.20 upgraded (and replaced actually) with all the bells and whistles available for it, I am having some troubles with the DSP; I'll explain. Sometimes when using a digital input, and a sound processing like DD5.1 or DTS, I get these digital noises in all my loudspeakers, and big pops in my subwoofer. I tried to troubleshoot, changing the input, the kind of input from coax to optical, the source from my dvd to my cd player, it's the same. It appears and disappears anytime. I decided to do a master reset on my Av32r and it made the digital noises disappear in the loudspeakers, but the big pops remained in the sub. They occur randomly, and they never occur with an analog input or a stereo processing. Any ideas ?