Radial Engineering R800 1023 JS3 Passive Microphone Splitter

The Radial Engineering JS3 is a professional passive microphone splitter built around a Jensen transformer with a nickel-laminated core, widely regarded as the gold standard for audio signal isolation. It accepts a single microphone-level XLR input and splits it to three XLR outputs: one direct through connection and two fully transformer-isolated outputs. The Jensen transformer provides greater than 90dB of noise rejection, ensuring that the split signals remain clean and free from interference even in electrically noisy environments such as concert venues and broadcast facilities.

Practical features include a -30dB switchable pad on the input for handling hot signals without distortion, and independent ground lift switches on the isolated outputs to eliminate hum caused by ground loops between separate audio systems. The fully passive design means the JS3 requires no power, adding to its reliability and simplicity. Housed in Radial's signature 14-gauge steel I-beam chassis, the unit is built to withstand the rigors of touring and permanent installation alike. The JS3 is particularly well-suited for scenarios where a single microphone must feed front-of-house, monitor, and broadcast or recording consoles simultaneously.