Check this one out:
 
http://cgi.ebay.com/2-ch-Tube-Mic-Inst-preamp-based-on-Alembic_W0QQitemZ7393789830QQcategoryZ23790QQrdZ1QQcmdZViewItem
 
Why waste $500 or so on a used Alembic pre-amp, when for only about $100 more you can get a used COPY of an Alembic pre-amp?  Hope springs eternal.
 
Bill, tgo

Gee, no bidders @ $600! Can't understand why! LOL!
 
H*ll, for $100 more, you can just about get a NEW Alembic F-1X!!!