I am using a BAT VK3i with Magneplanar 1.6QRs, so while I can't address your specific match, I can tell you that this is a very neutral preamp. I don't notice any particular character, other than the fact that music from my system just seems to wash over the entire room. FYI, amp is a BAT VK200 (solid state).
BAT or Sonic Frontiers w/ Martin Logans?
OK, I need to "warm up" my Martin Logan SL-3's with a tube amp for under $1500 (Driven by Sunfire amp). The two finalists are the BAT VK 3i and the Sonic Frontiers Line 1. Can anyone make recomendations one way or another? If any Martin Logan owners can share experiences I would appreciate it. I live over an hour away from any hi-fi stores so your input will save me lots of time.