 Neutrik NL4MMX Neutrik 4 pole lockable coupler. Links two NL2/4FC or NL4FX together for cable extension. Can be permanently attached to NL2/4FC or NL4FX. Rated current/contact: 15 A rms continuous Rated current per contact: 30 Amp audio signal, duty cycle 50 % Dielectric strength: 4kV peak Rated voltage: 250 V ac Locking device: Quick lock | 
