They say it sounds fine on my stock mic, but high pitched on my Shure 58... also tried an electret mic and they still tell me it's high pitched... But the stock dynamic mic sounds ok... I hear lots of people say that Yaesu radios tend to be a little lacking in the base range. The radio DOES have a new 2100hz SSB filter... not sure if that is that cause as I am new to Amateur Radios