What is the quietest preamp you've used?


Can you also please tell me whether you were using balanced or se ins/outs? Thanks.
matti
In terms of tubed preamps the quietest I've yet used, and to a large degree, is my current Herron VTSP1A/166. It is fantasticly quiet as well as great sounding. If you are up to considering tubes, I highly recommend it. It's completely single ended, as is the rest of my system.
Another vote for First Sound Presence Deluxe mkII. Absolute silence. Shhhh you can hear yourself breathing. ;-)