The Glensound GS-ET04 4-channel audio transformer isolation unit is a 1U 19″ rack device providing four transformer-isolated audio paths to break ground loops and improve noise performance in broadcast systems.
$ 1,194.35
The Glensound GS-ET04 is a 1U 19″ rackmount 4-channel audio transformer isolation unit designed to provide galvanic isolation between equipment in professional broadcast and production environments. Each channel uses a dedicated transformer to help eliminate hum loops, reduce interference and improve common-mode rejection where different parts of a plant share audio but not a common ground reference.
The Glensound GS-ET04 provides balanced line-level inputs and outputs for each of the four channels on the rear panel, allowing the unit to be inserted transparently between source and destination equipment. The transformer coupling ensures that audio is passed while unwanted DC and ground-related noise are blocked, making it suitable for use between consoles, routers, distribution amplifiers and external feeds. It integrates neatly alongside other broadcast audio interfaces and audio mixers wherever galvanic isolation is required in the signal chain.
In daily use the Glensound GS-ET04 offers engineers a simple, passive tool to solve ground loop and interference problems without adding complexity to the system. Once wired in-line, the four channels can remain in place as part of the permanent installation, providing ongoing protection as equipment changes over time. Within plants that standardise on the Glensound broadcast audio range, the GS-ET04 sits naturally among other utility units, helping maintain clean, reliable audio paths across studios, control rooms and OB facilities.
