I have your ADSP chip in an Icom IC-725 and it out performs anything else in my ham shack. Here at work, Alyeska Pipeline Service Company, we have a small fleet of work boats that are used to place conatinmtne booms around the tankers while they are loading oil. These boom boats are quite noisy inside due to the fact that the cabin sits right on top of the engine. The boat operators were complaining that they couldn't hear the radios. I couldn't get noise cancelling mikes for the radios, so I installed your ADSP speakers. The crews raved about how good this improved their radio communications. I guess the moral of the story is that if you can't eliminate the noise going into the radio, SGC can pick it off coming out of the radio.

Joe KL7KWE