Would adding a pre back into the system eliminate some extreme glare? Jerryaudio
No but it could mask it, and if it masks it, it will no doubt mask other things as well such as your new found detail.
Your experiment was a good one going direct from your Bel Canto 2.5 into your amp, as you say you have more detail, but what that's also unveiled is the hardness that something else has. This could be the amp, speakers or a even very live room. This is where you should look to cure the problem, not just throw a preamp into it that may mask it and the detail as well.
Cheers George