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
The quietest amp I,ve ever heard was an old APT Holman that a friend of mine had dumped years ago and want it to sell it to me. When we tried out it didn,t worked at all, so yeah I guess thats the quietest preamp I,ve ever heard in my life.
Nagra PL-L. Easily the quietest and most transparent. Ayre K-1x was also quiet (but a bit drier than the tubed Nagra)