The sound quality isnt as good as the oo2r
BUT its got compressors and EQ built in per channel and 2 56bit effects processors built in. It also recalls the desk in 0.25 of a second and you can save the entire desk setup to 1 file and reload it later.
it doesnt work with pro-tools either.
if you use PT... then the 002r is a must
if you work with cubase, logic, sonar or digital performer then the yamaha rocks.
Downsides... the Yamaha autoconnector can be hard to use for Noobs ive never had a problem and i love mine to death.