"Among other planes, I fly a 1941 Fairchild PT-19 open cockpit. I have had very poor results from several headsets in the PT-19. I purchased a Lightspeed Zulu at 2009 Air Venture in Oshkosh. I just want to report to you that it has worked great in the open cockpit. By far the best I have used. Thanks."
Zulu. Change your mind.