The Hyper LIP� Single with Tone Converter� makes calling in elk easy. The open single-reed reproduces the high pitches of cows and calves. Removing the Tone Converter� allows louder calling when locating or calling bulls from longer distances. The Hyper LIP� Single with Tone Converter� takes all the guesswork out of calling bulls up close. - Open single-reed achieves higher pitch of cows and calves - Tone Converter� produces mellow and softer tones so important for calling in those call-shy bulls