10-77 | R/A 1/4" MALE MONO TO 1/4" FEMALE MONO, DUAL IMPEDANCE LINE MATCHING TRANSFORMER Comes with built-in High/Low switch. No wiring necessary. 1/4" Female mono jack with switchable input between 600 ohm / 50K ohm to 600 ohm right angle 1/4" Male mono plug on a 6 inch cable.