Got my Sena 20s pair delivered yesterday from Bike Effects.... Thanks Jeff...
However - one of the units doesn't work properly, installed, paired - comms works fine, but when trying to play music either shared music, or just paired with its own phone - no go.... there is very very little volume and when dialed volume up even close enough to barely hear it - it goes into feedback screeching through the speakers..... sound is very scratchy as well like something has a bad connection somewhere...
Firmware was updated to latest 2.1 out of the box before install on both - then even tried a second time on faulty unit in case it didn't take properly... still no go....
Will have to wait on Jeff @ Bike Effects on how to proceed...