Radial Engineering JS2
Microphone Splitter, 1-in / 2-out


The Radial JS2 is a Jensen Transformer equipped mic splitter that allows a balanced source to drive multiple destinations via standard XLR connectors. The passive device features a premium nickel laminated core transformer for exceptionally low harmonic distortion without the usual phase shift caused by lesser steel core transformers.

The undisputed benefit of 100% transformer isolated provides better than -90dB common mode noise rejection (CMR) thus eliminating troublesome hum & buzz caused by stray voltage and ground loops. The JS2 offers a simple yet highly effective interface for microphones or direct boxes, and with the addition of the -30dB pad, consumer and line level devices may be employed without distortion or fear of overload due to saturation.

The Radial JS2 mic splitter features a rugged 14-gauge steel construction for maximum durability. A unique book-end design creates a protective zone for switches and connectors against the harsh environment of concert touring. An internal welded I-beam skeleton houses the PC board creating a virtually indestructible monocoque design that makes it impossible to torque the circuit board. This eliminates stress on the solder points which can cause cold solder joints to develop. This innovative design also has the unique advantage of allowing up to 8 units to be rack-mounted using the Radial J-Rak. The J-Rak is a heavy-duty rack shelf that allows the splitters to span across a vertical array using only two 19” rack spaces.


  • 100% isolation to eliminate ground loops
  • Jensen transformer equipped for best sound
  • Microphone or line level signal handling
  • Compact design - may be J-Rak mounted
  • Ultra rugged 14-gauge steel construction


  • Input impedance: 1.06kOhms (1kHz, -20dBu)
  • Insertion loss: .8dB
  • Voltage gain: -.82dB (1kHz, -20dBu)
  • Deviation from linear phase: +3.3/-0° (20Hz to 20kHz,-20dBu)
  • Frequency Response: 10Hz to 80kHz
  • Distortion (THD):
        * 0.001% (1kHz,-20dBu)
        * 0.05% (20Hz, -20dBu)
  • Maximum input level: +2.0dBu (20Hz, 1% THD)
  • Common-mode rejection ratio (CMRR):
        * 130dB(60Hz)
        * 95dB (3kHz)
  • Output Impedance: 245 Ohms
  • Dimensions (H x W x D): 2” x 3.25” x 5”
  • Weight: 1.95 lbs. (0.9 kg)
  • Construction: 14-gauge steel chassis & shell,baked enamel finish
  • Warranty: 3 years on device, 20yrs on Jensen transformers
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