(2) NEUTRIK NL2FX SpeakON 2-Pole Female Cable Connector Current rating 40 A continuous, 50 A audio signal with 50% duty cycle. Only 3 parts, easy to assemble. High impact materials  long-lasting and reliable. Easy and extremely precise locking system "Quick Lock". 1 piece strain relief, chuck for 6 to 10 mm cable O.D. Mates with 4-pole chassis connector as well and makes contact with +1/-1.