speaker cable and IC's to dim brightness in system

Audioquest Sterling. Smooths out the brightness and extends highs beyond without dulling . Brings midrange and bass into focus which creates the illusion of less brightness. I've heard them on many systems and can't find anything I like better

I really agreed with Sean's comments. No interconnects in the world would tame the Krell which is giving you that aggressive sound. Your 802 is one of the very best ever made. The Krell is not the kind of amp that will give you long term satisfaction. I had 802 before and I found they mate with tube amps very well.

I have found that the MIT line of cables did a good job diminishing the brightness of my Thiel 3.6's with solid state amps. They tended to take all the high frequency detail, and 'space it out' a bit temporally- not sacrificing the detail, but keeping it from being too bunched up and screechy.

Thanks all, I've isolated my power cables and moved all my IC's and speak cable to cobaltcabel 10G copper and the brightness has smoothed out to a very satisfying level. Other expert opinions aside, I'm thinking I'm going to like the Krell and B&W matchup over the longer haul. But as Sean pointed out, if I don't over the next couple of months, I've got some options. Thanks again, this is really a great BB.