Reply to Foccustire Saffire 6 not loud enough to Gig with?

so I tried gigging with Reason, Ableton, Papens Sub Boom Bass and had great success with the software but my focusrite saffire was cranked all the way up into the mixer and it wasn't loud enough compared to my compatriots S4 or NI AUdio 2. Could it be because the unit is USB powered? Similar to the Novation twiitch not being loud enough because it is USB powered?

Anybody else have good loud sound card recommendations?

Anybody else have a similar issue with the foccusrite saffire 6?