Which preamp for Quicksilver mono amps?

I'm using a Herron VTSP-360 with my V-4s

I too have heard them with an Aric Audio pre and the match was amazing!

Call him, his customer service is as legendary as his tube gear.

I am not looking for any sound improvement. I have not yet thought much about matching KT mono with QS preamp, but since QS preamp is relatively cheap ($1500)

I wouldn’t bother.  Just put the $1500 towards a real future upgrade like the Spatial Raven, Aric Motherload, etc. that are on another level entirely.

+1 on CJ recommendation. 

Sounds like it wasn’t a good idea to consider a QS preamp.

The AI preamp recently had new tube sets from Audible Illusions. The sound got much better with the new tubes, but I wonder how long it will last. Maybe I need to change the tubes every 3~4 years? That was one reason why I was toying around having a QS preamp which I presume last much longer than AI preamp.

It sounds like not that many people match their QS mono amps with QS preamps. I wonder it is because QS preamps are not as good as QS power amps?