just checking out the joycon and come across this little sucker that can work with the joycon unit. it allows you to retain ur oem/aftermarket audio system and have your carpc output audio to the one set of amps. something i have rarely seen

so no more carpc passthru to oem system via aux.

http://www.ebay.com.au/itm/CPJ-MIX-A...item3382171ddb

maybe another alternative to the big brand named units.