Looking for a desktop power amp


I have a *small* desk at home that I am outfitting with a good quality DAC (Benchmark DAC-1 USB ~$700 CAD) that supports a preamp output and new pair of 100W Energy CB-5 bookshelf speakers (~$400 CAD).

Any suggestions for a small footprint power amp that would be less than $400 and ideally more like <=$200 that won't let the system down? I don't even need a preamp but it seems only the full size boxes come as pure power amps.

Note: I have a derent pair of headphones so please don't freak out that I'm connecting the DAC-1 to CB-5s.
rossmacgregor
The Optoma NuForce STA-120 may fit the bill.  The Topping MX3 is tiny and might be enough.  Incidentally, there’s a used pair of Silverline Minuet speakers available on US Audio Mart that should sell for around $400 CAD that would be worth looking into.  Great speakers and not hard to drive.  Best of luck. 
I went with Project Audio's S2 amp and preamp because like you I had limited desk space. Project's S2 boxes, which stack, have very small footprint.