wharfySam Tellig, reviewer for Stereophile uses these Quicksilver amps with my passive, and says he will never go back to an active preamp, his piano teaching son also heard it and ordered a passive as well. The Mini Mono are a perfect match for a 10kohm passive.
Passive pre-amp/Quicksilver Mini Monos
Try the Schiit Sys for a cheap (not the best) $49 10kohm passive, that you can try then send back.
http://www.schiit.com/products/sys
Cheers George