I need some numbers for proof

[appleyardrules]

What gives the onyx premps the advantage when recording through a 400f or a 800r into a daw. Some people say that the quality blows motu out of the water
but there converters are comparable in dynamic range 111 db for motu and 113 for mackie, so what makes it so good?

 

[dgatwood]

What gives the onyx premps the advantage when recording through a 400f or a 800r into a daw. Some people say that the quality blows motu out of the water
but there converters are comparable in dynamic range 111 db for motu and 113 for mackie, so what makes it so good?

If there's a noticeable difference, it is probably mostly in the quality of analog components in the signal path, e.g. like filter capacitors... or possibly a different FET.