My rig is a MF Nu-Vista CD, A3cr Preamp, A300cr Power Amp (225 wpc), B&W N804s, Nu-Vista Silver IC's and Coincident CST-1 speaker cables. From the looks of your system, I'd say it's the Tara Labs cable/ICs which are the problem. The Nu-Vista Silvers really give fabulous detail without being bright and the Coincident Speaker Cable gives a full, rich sound - the 804s really sing with this set-up. I've always found Tara cabling to be a bit lean and bright.
Hope this helps.
Hope this helps.