The Hosa CBT-500 Audio Cable Tester diagnoses signal failure in cables terminated with various connectors, including XLR, Phone, Phono, speakON, DIN, Ethernet, and USB Type A to Type B cables. It also has removable leads for verifying continuity of additional connectors and jacks. Reviews note that it is sturdy and well made, and includes probes for easy continuity testing.

Operation requires one 9-volt battery (included).