Hello Samir ... I'm not familiar with the BM-10 but do have a Traveler for use with my ICOM 7000 that I sometimes use for portable excursions. So can't comment about the audio with a K2, but I would not recommend the Traveler for contest work because of its construction. It is very light and flimsy without any good retention on the ear(s). It is OK for short periods of time, but would be annoying for a long contest!
For contests with my K3 I really like my JRC mono headphones - VERY comfortable and nice for communications audio. If you need/want stereo, lots of people are recently recommending the Yamaha CM500, although I have not personally tried them. 73 ... Craig AC0DS ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html