iPad BEHRINGER UFO202 USB Audio Interface

I use the Cakewalk UA-1G &
behringer U-Control UCA2A2 (Red One)
http://www.behringer.com/EN/Products/UCA222.aspx

behringer U-CONTROL UCA202
http://www.behringer.com/EN/Products/UCA202.aspx

behringer U-PHONO UFO202
http://www.behringer.com/EN/Products/UFO202.aspx