Help chose : Hafler 110 preamp or Carver C2 preamp ??

what does the robbergerman NOT have in his vast collection ?

i built so many 110, 101, 200, etc putting myself thru University....a very competent preamp and others have mentioned more “ off the shelf” modification available....

BUT Ralph makes a good point, you have lots of choices...ONE of my favorite low. $ ss preamps is the acoustat RP-2 or in tubes a CJ PV-2
or Ralphs entry level pre.... 

Can't comment on the Carver, but had the Hafler 110 built as a kit by myself. It worked great, but compared to some of the similar pre's of the time, I thought the Hafler was a bit on the hard sounding side, mostly noticed in the upper mids. Was slight, but audible. I purchased a used B&K Pro 5 preamp and found it better sounding. As Ralph says, there are others than these two.

Try a Stax CA-Z, if you can find one.