The Bike Audio Speaker Bridge is now available. This nifty adapter allows you covert audio from your bike speakers to earphones. A switch lets you select speakers or earphones at any time.
If you have an MC-200 audio system, the adapter converts the output from your external speakers to use as an isolated input into the MC-200 where it will be treated as any other source device. Just connect the earphone side to the MC-200 and you can switch between headsets and the bike speaker.
A great addition to the BMW K1600, but works with any bike.