Dear Whatjd,
Tube amplification seems to do wonders for the 1.6. The best amp overall I have used with them is the vt100m2. I found the pass labs and the mccormack dna-1 to a little less alive with them. The CJ-mv50 was wonderful too. If I had to buy something today, I think I would go for a modern day mv-55, cav-50 or maybe a premier 11a. A big reason for these smaller amps is that 1.6qr's tend to drive an amp pretty hard & I would guess tube replacement would take place often. I notice I have to turn the gain up around twice as high to get the same sound out of my 1.6's verses my ap virgo speakers when using the same amp. A vt100 is $300 to retube, and an mv50 is around 100. The mv-55 actually provided better bass than the vt100. The vt100 was superior in terms of imaging and transparancy.