Primos Hyper LIP® Double with Tone Converter - The Hyper LIP® Double with Tone Converter makes calling elk easy. The Tone Converter converts the locating calls of the Hyper LIP® into more subtle sounds that a matriarch cow uses when a bull has responded to her initial calls. This is important when trying to coax a bull in the last 100 yards. Removing the Tone Converter allows louder calling when locating or calling bulls from longer distances. The Hyper LIP® Double with Tone Converter takes all the guesswork out of calling bulls up close. Open double-reed reproduces deeper, louder tones of the matriarch cowTone Converter produces mellow and softer tones.