Zumo 550 via autocom best thing i have done to any of my bikes
I would imagine 660 would have the same quality audio.
thanks again guys. Ok still waiting on MP3 playback quality. Again this will be hard wired to my starcom and in ear monitors from there. Anybody else have a similar setup that can comment?

Bit of a hijack, but its a relevant thread. Been considering a 660 for music/phone/gps integration. I'm assuming that all I then need is a Bluetooth headset for the helmet. Are there any non-helmet specific solutions? I know there are Schuberth/BMW comms systems, but what about for fitment to an Arai? I'm not willing to compromise on my helmet choice, as a well fitting helmet is more important that the comms.
I suggest that you take your chosen monitors to a dealer, or to someone with a Zumo 660, and just plug into the audio out jack and see for yourself.
Absolute HiFi isn't a priority for me, so saying that the Autocom hard-wired system that I use is fine is just my opinion. If you're a HiFi fanatic and have spent thousands on your home audio system then your requirements will differ. However IMHO, on a bike, the difference is pretty academic, even with in-ear monitors.
I can't be that bad as once I accidentally connected my Garmin though my phone Bluetooth dongle connected to my Autocom, was wondering why the quality seemed a bit pants and the PMR didn't seem to be working![]()
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Don't know anyone who has one and can't find any local dealers hence the question on here. All the dealers round here just have car stuff unfortunately.

I didn't try very hard admittedly but I couldn't actually find a car Garmin GPS unit that did mp3.