Radio Design Labs FORMAT-A twisted pair products send, receive and distribute audio with studio-quality performance.

RDL Modules are available for mounting in walls, cabinets, racks and at other convenient locations. SENDING and RECEIVING modules are equipped with connectors and terminal blocks for standard -10 dBV unbalanced and +4 dBu balanced line levels, and standard microphone levels.
FORMAT-A uses one pair for power and three pairs for signals. Sending and receiving modules each use one pair, two pairs or all three pairs for audio signals. Single-pair products allow the installer to select which of the three pairs is used to send or receive the signal. Two-pair products are used for stereo audio. Three-pair products send and receive three separate signals which may comprise three mono signals or microphone plus stereo line signals. Modules that do not use all three pairs are equipped with two RJ45 jacks, allowing SENDERS and RECEIVERS to be daisy-chained.
RDL FORMAT-A products are compatible with RDL twisted-pair power inserters and signal distributors. Format-A products are designed and manufactured in the U.S.A.
Learn More about RDL’s Format-A System
Watch the video below for a brief introduction to RDL’ Format-A System.
RDL is the world’s premier manufacturer of high-quality audio, video and control modules. The concept of APPLICATION-SPECIFIC MODULES was first introduced by RDL more than twenty years ago…a concept promoting unsurpassed value and performance. A concept which has attained widespread popularity and is a proven success in many thousands of facilities around the world.
As the inventor of APPLICATION-SPECIFIC MODULES, RDL continues to lead the industry with solutions to specific problems as well as building blocks of quality system designs. RDL is on the cutting edge in product performance, fully robotic high-volume manufacturing and technical applications advice from a dedicated customer service staff. RDL stands ready with the resources and the commitment to assist with any need, from the simplest solution to the most complex installation.