The Twist Lock to 1/4" adapter is an adapter for PA amplifier and speaker applications. This adapter allows the user to adapt a 1/4" speaker cable into one that has Twist-Lock Speakon connectors. The twist lock is a locking device offering security during live audio applications. This adapter utilizes a male speakon connector at one end and a standard 1/4" mono female jack on the other end. This allows you to convert a standard speaker cable with 1/4" plugs into one that has twist-lock speakon plugs.