The car outputs are 3.6V peak but in the car audio industry this is generically refered to as 4V outputs. Ken claimed to observe that the outputs distorted above 1.6V - if this was true then you would not be able to turn the volume above about half way without getting distortion.

I don't know why he observed this. Perhaps he had a large +ve EQ adjustment or loudness setting, or perhaps his player was faulty. Whatever the reason, we stand by our 3.6V figure.

Rob