yeah the knobs can be asigned to other functions on your vsts or daw ..the main difference is you dont get any vsts instruments with the oxygen 49 you just get abelton lite so you will have to get
vst instruments seperatly to get any sounds out of the keyboard unless you already have some vsts ..with the keyrig 49 you get lots of
vst instruments(pianos..drums..synths..gm sounds..organs..orchestras) and you also get abelton lite too..both are great keyboards too choose from and at great prices too ..the keyrig is also cheaper