The sound on the HD channels are extremely low, need to put the tv on 100 volume, and when you switch over your ears want to burst. the HD pvr as alot of flaws like the remote not keeping up with your commands ranging from , skipping forward a program on playlist 10 to 40 secs after you had pressed the damn pause or play. after switching between my divx dvd player and tv, it completely malfunctions NO HDCP and i need to restart the whole thing, All updates have been taking place. Did i mention it takes a good 3 minutes or more for the thing to start up before viewing. Even the channel guide is extremely slow. Only a bit of cloudy weather and youll notice things. I really hope they get some quality firmware for the PVR because the HD channels truely are amazing