Better known as "Big Detective", the most advanced cable tester in the industry. Features ten LED's for visual functionality based upon Advanced Digital CMOS Technology. The dual rows of rotating LED's display what one end of the cable is sending and what the other end is receiving. Supports XLR, 1/4"", Midi, Speak-On, Mini, RCA and BNC. Capabilities include displays for Normal Continuity, Pin to Pin Connection, Proper Phasing and even connections from one style to another.