MMX 300


USB Converter:
Connection PC/MAC.......................1 x USB Type A(M)
Cable length.................................1.5 m
Audio connections.........................2 x 3.5 mm stereo jacks
Operating systems.........................Windows®, MAC
Dimensions l x w x h.......................76 x 30 x 16 mm
Weight incl. cable..........................45 g

I'd rather connect them straight to a Prelude or an Elite Pro. Even the X-FI Xtreme Music or Gamer crushes USB sound wise. That is unless you have expensive Hi-Fi USB/DACs LOL!