So I have a unique need for a head unit with a passive aux input. I think passive is the correct word. The reason, I have a radar detector that is very quiet. With the music turned up or the windows down, I cannot hear when it goes off. It is placed in my peripheral vision but during the day I still sometimes do not notice it going off, thus making it useless.
Is there such a head unit in existence with an aux input that could play audio even when the aux is not selected. For example, I have all my music on a micro sd card plugged into the usb port. So if the radar detector was plugged into such and aux port, I would be able to hear the alert. Is there a product available to do this?
If not a head unit, Is there possibly another way that anyone could think of that would get a similar result.
Thanks in advance!