Got a "Sven" custom made heavy duty Headphone adapter works with the Simplex..Anfibio and Kruzer...approx. 2 ft. long..connects to control head and can follow rod to rear of elbow cup..(I used zip ties to follow conture of rod)...looking to trade for a Mak/Nok pinpointer or a Gold Bug SE/f19 5x10 Solid coil ...can send pictures if interested...thanks joe