can anyone confirm that lexus 6cd changer factory radio has the sound processor in the amp not in the stereo?
i tried to put a factory radio back in the 2001 IS 300 with a 4 channel amp
i got the output from OEM radio line level but theres no volume or any audio controls.
it seems like they are actually in the amp itsself
can someone confirm that?
is there any way around it?
