Passive pre-amp/Quicksilver Mini Monos

I have a NAD M51 which has an excellent digital volume but liked it much better connected as a source to my conrad johnson Classic 2SE.  A lot has to do with synergy and impedance matching in my opinion.  

IMO it is very hard to match any old passive preamp.  It takes some experimentation.  But give it a try.

A lot of useful advice and recommendations. All appreciated. I am not sure what I will do.

In an effort to consolidate the equipment I am looking at options. There have been a couple occasions when the heat generated by the Mini's are used to finish drying socks and the like.

In the meanwhile I will keep moving the sweaters and clothing that frequently end up folded and resting on my equipment :-) 

Half-Ass may be fine for most of the feeble-minded.
 Passive preamps will of course work with Quicksilver Mini Monos.
 You may even say "" my that sounds clear""  but later find you are settling for elevator music in the Dynamics department.
 
If you have a decent pair of speakers like a Vandersteen 1 Ci the latest matching Quicksilver 1 K preamp w 12AT7 will far better show that piece of music's shadings, subtleties, and proper step up with dynamic graduations that make music come alive.
 Best JohnnyR  
 

Since it appears you run only the digital source, consider a more upscale CD player with variable tube output. Think of that as a self-contained CD player and preamplifier.

I have a couple of these sort of CD players, and often go that way. You reduce components, clutter, connections, and cabling without having to worry over a potentially weak in the knees passive preamplifier