Reply to SOUNCARD Change/ MOD to S4?

I love S4, but the sound on my unit, is crap, i send it, but i doubt they gona fix it, when i go to the gigs, i need to give more DBS on the mixer, than others with serato/traktor pro/ vinyls do with others sounds cards.

I was believeing about changing the S4 sound card.

Did anyone open an S4 and see how it is inside? Was believeing about buying an audio fire 2, open it, and mount inside the S4, but dont know if is posible to remove the one is inside, i know im gona lose some inputs but i dont care, i love this machine but when i plug others external sounds cards, they are hotted, have more dbs, and better sound.

What do you believe about it? Thanks.