I'm going to buy a Tech 21 GED-2112 SansAmp, and to utilize it (in mono), I need a mixer with the following features; * Rack mountable, 1-space. (must be rack mountable - don't want a lump with cables sitting on top of my rack.) * Two XLR inputs, one XLR and/or one 1/4" summed output. (why the hell didn't Tech 21 install a "mono out" on this?) That's it - simple, huh? I have scoured the usual sites, but I cant find anything so far... Thanks!