All - for information, if you don't want to spend $150+ for a Mix-it in order to send your GPS, Radar Detector, iPOD, etc to your headphones, you can buy the Behringer MX400 4-Channel Line Mixer at Zzounds.com for $19.95. It takes 12VDC power, has four inputs (each with level controls) and is about 4" long, 2" wise and 1-1/2" deep. Easily fits in either side pocket. You do have to buy the 1/4" to 1/8" plug adapters as it uses 1/4" jacks. Still, all told, less that $30 for a fully functioning mixer.
Mine works very well.
Regards,
Mark
Mine works very well.
Regards,
Mark