Just received my silver G91 and G57. I'm using B&W Nautilus 804's that are well broken in and square Supra Ply 3.4/S OFC bi-wired speaker cable bought in Sweden.

There is a nasty upper mid range peak when playing CDs or DVD-As - more prevalent on CDs, which is grating to listen to especially at volumes of 70 or more and emphasises sibilence in vocals. My older CD player plugged in via the TAPE analog-in on the G91 and played through the same G57 and speaker cable does not have this problem, so I suspect the G91 CD/DVD output.

Is this a characteristic break-in problem, if so how long does it take to go away? Or is it likely to be another problem.

Appreciate any input.

thanks
Sanjay

G91 - G57 - B&W804 - Squeezebox 3