Primos Hyper LIP(R) Double with Tone Converter - The Hyper LIP(R) Double with Tone Converter makes calling elk easy. The Tone Converter converts the locating calls of the Hyper LIP(R) 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(R) 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.