Hi Gary, it is a mono to mono adapter, see the page http://comingsoon.radioshack.com/radioshackgold-series-mono-to-mono-y-adapter/2740892.html

I was using a dual ts to trs adapter and that's the one that caused the problem with the mic not coming through.

DonM recommended using the RCA connection, but I have been struggling with that (see earlier posts). Having discussed the issue with Bose and Sweetwater technical support a new Bose arrived this morning, but exactly the same problem, so I'll be calling Bose again on Monday.