hi i have a headunit and dvd player hooked up to 1 amp through a phono splitter it all works but i can hear my engine rev through my speakers when i turn on the amp through either the dvd or cd player. its a very high pitch whine and is getting annoying does anybody know why this is happening and what i can do to stop it. thankyou:worship:
My mate had this problem, and i think its because you may be running the power cable next to the phono leads, at least i think this was the cause if i remember.