Based on some of the comments above (about the Synergy amps being warmer or darker than the Fet Valve amps) I was a bit worried about my recent move from a Synergy 240 to an FV 400R. My speakers are KEF LS-500's and I started buying AVA electronics last spring to try to tame some excessive shrillness that I experienced coming out of my speakers when driven by my previous electronics (NuForce pre and Parasound power). With a T-10 pre and a Synergy 240 things were sounding much better. I certainly do not want to move back towards shrill or sharp or edgy.
I am delighted to report that the 400R has done no such thing. There is "more detail, resolution, air and transparency" ( as reported by I Greyhound Fan above). But there's nothing shrill or sharp or edgy about it. To my ears (and, admittedly, using Frank's 'tubiest' preamp with the 'tubiest' tube option - 6GC7's), it just sounds like beautiful music. Very happy with the change.
