C905 Acoustics?

Hey
ive looked EVERYWHERE (i think) for a decent acoustic
ive tryed ultra clear v2 ive just tryed anoher one and i can not find one with a DECENT i mean decent volume boost
i had a cracking one on my K800i it doubled the volume by 200% so insted of having max all the time i stayed on half or 5 hehe
now can anyone point me in the right direction to one simular to the k800i one or can i change a filename here and there on my k800i ones and put them on my C905?
any help most greatfull
btw if there is a post on here for it then i appologise for my not seeing it lol:a006