MadBoxPC posted a review on the M-Audio Mobile Pre USB in Spanish

MobilePre USB is the preamp with a built-in audio interface that's designed for laptop recording such as field recording and sampling expeditions. A total of three kinds of audio inputs and outputs provide maximum flexibility for any application (including two on-board microphone/instrument preamps and high-impedance instrument inputs, ideal for connecting guitars and basses). We tested it, and we also show a cool rock song recorded entirely using this device

Read more (Spanish)
M-Audio Mobile Pre USB Review (Spanish)