Do any of these have an audio input that will soften or mute the stereo like the NAV does? What I want to do is tie the output from a voice radar into the stereo somehow and have it mute or turn down the stereo like the NAV does. Anyway to do this?
I looked into them more than a year ago to see if they had any options to mute an aux source, which it did not do they way I wanted it to perform for the non-navi 430. You have to double check for the navi head units. You are looking for an auto signal (music) sensor feature with in the lockpick devices.
For example: an external piece such as the JL Audio CL-SES would be great if you are going into aftermarket amps. You can hookup a non-navi deck, a GPS and your radar detector. The RF 3.sixty.3 processor does it thru the bluetooth.