Presently running with McCormack TLC-1 Deluxe. Nicely transparent esp. in passive mode. Auditioned a Golden Tube SEP2 which had a better stage & was rather euphonic too, but I didn't buy it as I found out that they've gone under (no warranty or support). I'm now considering trying out a B.A.T., which I suspect may matchup quite well considering it's tubed & balanced. Is anyone else using this setup?