Used it on a Sony X-AV5650 head unit and works exceptionally well. It has rebooted a couple of times during a call, but as I run beta versions on my iPhone I will not judge it adversely as I cannot speculate this would have happened on a public released of iOS.Connection time is a little lengthy 25-30 seconds from ignition but to be honest it’s not really bothered me. Responsive time on music change and button presses has a marginally second or so delay but certainly doesn’t cause issue.The music quality seems to be as good as I expect. Nice and clear, good bass and no lag or distortion.Maps seems to run smoothly, I haven’t had any delay in map movement or guidance issues.Lastly the web address for viewing the device is a wonderful idea! I can monitor what’s going on and perform any updates. I added a car logo and named the make and model and it created an app icon in CarPlay display, but if I press it then it quits CarPlay, so a little unsure of its purpose!Overall I am more than impressed. All reviews suggest it should be used on manufacturers head units so I was a little unsure if it would work with an aftermarket head unit, but rest assured it works perfectly!Wireless CarPlay made painless and effective in a little box!