ToShaRa_Mega_AcoustiC_v1.4_enhanced is the best driver for k750. i use it.....try this driver for sound
use FarManager: Main\ifs\settings\acoustic
Replace acoustic with this one.........And judge the result.
Link is here... Check the POLL RESULT
http://www.topsony.com/forum/showthr...?t=2170&page=2