Jax2, Re your sonic observations of the Hewlett disc. I have it in 2 channel redbook cd. I do not have the SACD (or even a SACD player, for that matter). Which leads to my question - is the SACD you have a 2 channel, or multi channel?
I ask because what you have described about the recordings sonics in general, is exactly what I have experienced when I have listened to the redbook cd layer of a multi-channel SACD. I'm told it isn't so, so I only know what I 'think' I have heard. I've never had the two format (Redbook and SACD) discs to do an A/B comparison. But, I'd think that if the disc was recorded to play back in 5 channels it is going to sound different when only the front two channels are played back. I don't know if on a SACD player that will make a difference or not, but I heard a distinct difference playing a MC SACD on a redbook player than I hear when I play back the CD layer on a 2 channel SACD hybrid recording.
I'm really curious as I did not experienced the problems you described which seem to surpass my hearing inadequacies. The gain issue for instance. I had no issue with gain at all. Well with in my expectations of CD playback. Nor did I find the piano excessively recessed nor did I detect any mic's sitting on the soundboard either.
Very interesting...........
PS I'm happy you ordered this before you read my recommendationa - I don't have to take any responsibility for your disappointment. :-)