Radial Engineering

Radial Engineering R800 1022 JS2 Passive Mic Splitter DI Box

5.0 (4 reviews)

Isolate and Optimize Your Microphone SignalIntroducing the Radial Engineering JS2 Passive Microphone Splitter Direct Box. This device provides electrically isolated XLR inputs and outputs, and a second auxiliary direct throughput with ground lift. Featuring a transformer-isolated output, a 30dB p...

$284.99*
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*Price sourced from Amazon.com. Last updated:Jun 19, 2026.Price and availability are subject to change.

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Overview

Isolate and Optimize Your Microphone Signal

Introducing the Radial Engineering JS2 Passive Microphone Splitter Direct Box. This device provides electrically isolated XLR inputs and outputs, and a second auxiliary direct throughput with ground lift. Featuring a transformer-isolated output, a 30dB pad, and 48V DC phantom power, the JS2 is crafted for superior performance and noise rejection.

  • Passive splitter direct box
  • Electrically isolated XLR I/O
  • Second auxiliary direct throughput with ground lift
  • Transformer-isolated output
  • 30dB pad
  • 48V DC phantom power
  • Ground lift
  • Common mode noise rejection up to -100dB at 60Hz
  • 14-gauge, I-Beam steel frame
  • Baked enamel finish
  • Innovative bookend cover

Specifications:

  • Item Weight: 1.67 pounds
  • Product Dimensions: 6.4 x 4.2 x 2.9 inches
  • Item model number: R800 1022
  • Color Name: Brown
  • Voltage: 240 Volts

Key Features

1 Through) Passive Microphone Splitter with Jensen Transformer

Low-noise 1-in/2-out (1 Isolated

-30dB Switchable Pad on Input

Switchable Ground Lifts

Specifications

Product Type
Mic Splitter DI Box
Model
R800 1022 JS2
Transformer Type
Jensen Transformer
Input/Output Configuration
1-in/2-out (1 Isolated, 1 Through)
Input Pad
-30dB Switchable
Ground Lift
Switchable
Design
Passive

Pros & Cons

👍 Pros

  • The Radial Engineering JS2 features a Jensen Transformer, contributing to its low-noise performance.
  • It offers a 1-in/2-out configuration with one isolated output, providing flexible signal routing options for live or studio use.
  • The integrated -30dB switchable pad on the input allows for handling high-level signals without distortion.
  • Equipped with switchable ground lifts, it helps to eliminate hum and buzz caused by ground loops.
  • Being a passive microphone splitter, it does not require external power for operation, simplifying setup.

👎 Cons

  • As a passive unit, it does not provide phantom power, which is necessary for condenser microphones.
  • The device is specifically designed for microphone splitting and may not be suitable for other audio signal processing needs.
  • While offering an isolated output, it only provides one such output, which might be limiting for more complex splitting requirements.

Frequently Asked Questions

The Radial Engineering JS2 passive microphone splitter utilizes a Jensen Transformer, known for its audio signal integrity.
No, the Radial Engineering JS2 is a passive microphone splitter, meaning it does not require external power for its core function.
The JS2 offers two outputs: one isolated and one direct "through" output, allowing for flexible signal distribution.
Yes, it includes a -30dB switchable pad on the input, which helps prevent signal overload from high-level sources.
The switchable ground lifts are included to help eliminate hum and noise caused by ground loops in audio systems.
As a passive splitter, the Radial Engineering JS2 does not provide phantom power, which is typically required for condenser microphones.