I saw post on here from a year ago but that topics closed now where someone described a metallic sound whilst viewing 5.1 dolby content that cleared when forcing to pcm instead but the pcm upset the balance.
I just wanted to say that I too have noticed some issues when the Ray connected via optical to my Sony TV with 5.1 content that I suspect might be the same issue. I would describe the problem is, that for some reason the surround channels are being mixed to mono through the Ray and are very slightly out of phase with each other, thus creating this awkward flanger type sound when mixed together. I’m reasonably confident (but not 100%) its just the non-stereo surround channels causing this, so its most noticeable on background/fx type sounds.
The normal stereo component seems ok (not that you can really sense stereo on the Ray, god knows why they thought it was a good idea to place the tweeters so close together!!)
Kinda have a love/hate relationship with this thing. The Trueplay works pretty well, and it definitely brings out mid range detail very well and dialogue sounds super clear, but its such a colossal waste of the width of this thing to bung all the drivers so close together!