Edited by Ken Rosenberg - 2/4/17 at 2:43pm
What kind of pre amp do you want?
Phono pre amp? mic pre amp? Something with int amp pre amp functionality? Would a distribution amp do?
There are solutions to all within your budget. For multiple balanced outs you will probably have to look to pro audio.
Here is one possible example. The outputs are TRS jack (to save space) rather than XLR but its the same thing really.
More suggestions available if you can supply further details of requirement.
For a rig like that you probably want something decent. Drawmer, Grace and Sonifex all make excellent products. Check out their websites.
On the other hand and assuming your Focals are active monitors you might find a passive monitor controller more suitable. Get one with a really good main pot.