Summary: Well built, seems very robust. I like that all I/Os are in the back (unlike the 2x2). It does what it's supposed to do and hopefully it will do it for years... And it looks good. I've always wandered how could anyone say anything negative about MIDI interface until i used the M-Audio Fast Track Pro...what a piece of %$#* !
Excerpt: it is a midi router. it doesn't rout anything. if you hook it up to a basic sequence it will fail. you can't play a simple melody on a keyboard without overloading it. it is a worthless piece of trash and i too, like the other reviewer of the other model of m-audio midisport 4x4 feel ripped off.
Summary: Mycket pålitligt och smidigt midi-interface som jag har använt i många år! Det som drar ned betyget en aning, är att det fortfarande (2009-03-23) inte finns någon drivrutin som gör att det kan användas under Windows XP64. Men i XP32/Vista32/Vista64 fungerar det fint!