ProAV1

Radial Engineering has built a reputation for solving real-world audio problems with transformer-isolated DI boxes that eliminate ground loops and maintain signal integrity. The ProAV1 addresses the AV integrator's nightmare of multiple connector types by accepting 1/4", RCA, 3.5mm stereo mini-jack, and line-level XLR inputs in a single passive unit.

The Eclipse ET-DB2 transformer provides 12:1 impedance matching with a flat 20Hz-20kHz response, while the stereo-to-mono merge function preserves channels when feeding a single input. The -15dB pad handles hot consumer-level signals, and the ground lift eliminates hum caused by ground loops. All passive operation means no power supply needed.

14-gauge steel construction built for integration work, with thru connectors for daisy-chaining signals. From laptops to CD players to smartphones, it standardizes any source to a balanced XLR output for PA systems and mixers.