What are you using mac or Windows? Add a signature with the basics of your setup please.
What you want is in principle not possible because you're using an ASIO driver, this driver doesn't allow 2 or more soundcards to be active. The USB mic can/must be seen as a (2nd) soundcard!
For Windows you could try ASIO4ALL, for mac maybe agregated devices.
I'm not a mac user so if others could fill in at this point would be nice.
Last edited by mroekalea
on Sun Apr 13, 2014 3:21 pm, edited 1 time in total.
Win8.1, 3930K@3.2Ghz, 32GB, Cubase 7.5 & artist 7.5, wavelab 8 elements, HSO, RND Portico 5033, UR824+MR816X+Focusrite pro 26 IO, CC121, Cubase IC pro, Halion 5, VG2, Arturia AF, TRacks CS grand + all custom elements, BFD3, Amplitube 3 (fender, orange, SVX collections, slash), HSO library, Fender Jazz basses, tube amps and 12 inchers!