> and little to nothing that is done either on the receiver, ATV, or playback source Well of course, it's nothing indeed -- they're simply passing through the

> and little to nothing that is done either on the receiver, ATV, or playback source Well of course, it's nothing indeed -- they're simply passing through the audio as it was originally mastered, as they're meant to. All your equipment is doing it right, assuming it's all configured correctly. And I assume it's not that the Roku "doesn't do much better", but does it exactly and precisely the same. If you have an issue, it's presumably with the mastering standards, not with any of your equipment. Which is a whole other conversation around relative decibel levels in mixing, but it has nothing to do with technology.