I have a pioneer 8600 headunit that I have hooked up an aux input to. I have used an iPOD with no problems. NO hiss, sounds great.
When I hook up my PSP it is also sounding great until I hook up a power adapter to it. When I have the aux hooked up and the power source i get a hiss.
Why could i be getting this? Do you have any suggestions as to how to remedy this problem?