Top ten tube preamps


What are your top 10 tube line stage preamps of all time?
samuellaudio
The UV-202 from RCa is considered the The grandfather of all power tubes. Really cool tube.
To my ears the Aesthetix Calypso is phenomenol, in this hobby one doesn't know how good the sound can be until one hears better. For now I have a hard time believing my system can get much better, so my vote goes for Calypso.