No, not yet. I have tried 3 different headsets and all squeal above the 16 on th IC volume. The Edsets will squeal above 15. I guess for now I' ll just have to live with it until I can get some electrical contact cleaner and give all the connections a good cleaning. I think it has a lot to do with the sensitivity of the mics used. Of the 3 I've tried, Edsets, J&M, and IMC, the Edsets are the most sensitive, followed by the J&M and the IMC. All were tested on the front and back.