To clarify my earlier post (two days ago), I do hear a noise from my speakers under the following circumstances:
1) Beginning of BD playback (via PS3 over HDMI)
2) When the 805 detects a change in audio format (e.g., switches from All Channel Stereo during the menu of a BD, to multichannel PCM on the actual soundtrack of a BD).
Once a BD is actually playing, there is no more popping or switching, so the initial noise doesn't bother me. If the 805 made continuous or random pops or clicks (via the speakers) during playback then I would consider this a problem, but my unit does not.
I've wondered (unscientifically) whether this noise is related to HDCP handshaking somehow, given that I've only heard it during with BDs. When I view video trailers saved to my PS3's HDD, for example, there is no switching noise. Then again, perhaps this is due to the fact that the 805 detects multichannel PCM output from the PS3's XMB (menu screen), and doesn't change/switch sounds formats when viewing other content (e.g., movie trailers) in the XMB. So my conclusion would be that the popping/switching sound I hear is simply a product of the AVR detecting and changing to a different audio format. I wish this process were silent, yes, but it's a minor annoyance AFAIAC.
To recap, this is a black 805 purchased from J&R.
XBL - thedanggang
PSN - the_dang_gang