Radial (R800 8030) Audio Switcher (R800 8030) - Balanced

Balanced remote AB switcher

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What's in the box:

  • Radial Engineering Relay Xo Balanced Remote AB switcher
  • Limited 3-Year Warranty

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Item Number 
Vendor Part
R800 8030

The Radial Relay Xo is a 1-in, 2-out balanced audio switcher designed to route the output of a microphone to two different audio inputs. You can use the Relay Xo to send the output of a microphone to two channels on the PA. The Relay Xo features a balanced XLR input and two balanced XLR outputs. There are no transformers or electronic buffers inside that could introduce distortion or color the tone. Instead, the Relay Xo employs military-grade gold-contact sealed relays to do the switching. Switching may be done using the side-access pushbutton switch or by remote control via the XLR and 1/4" input jacks using either the Radial JR1-L latching or JR1-M momentary footswitch. A remote link enables multiple Relay Xo's to be used in tandem.


  • Switch vocal microphone from PA to intercom
  • Allows artist to speak with musicians and techs
  • Remote control using footswitch
  • Route any balanced signal to two destinations

Specifications for the Radial (R800 8030) Audio Switcher

{ "Audio circuit type:" : "Remotely controlled mechanical relay", "Frequency response:" : "10Hz ~ 100kHz", "Dynamic range:" : ">140dB", "Gain:" : "0dB", "Total harmonic distortion:" : "<0.0005%", "Intermodulation Distortion:" : "0.001%", "Input Impedance:" : "Source dependent", "Output Impedance:" : "Source dependent", "Common Mode Rejection Ratio:" : "-106dB", "Noise:" : "-115dBu ", "Maximum Input:" : "+26dBu", "Features" : { "Ground lift" : "", "Input Connectors:" : "XLR-F input", "Output Connectors:" : "2 XLR-M outputs", "Extras:" : { "Combo (XLR-F & ¼" ) and ¼" loop-through remote connectors" : "", "Contact Closure Function" : [ "With ¼" TRS jack, short tip and ground to switch", "With XLR, short pin-1 ground and pin-2 Hot to switch" ] } }, "General" : { "Construction:" : "14 gauge steel with internal I-beam", "Size (L x W x D):" : "5" x 3.3" x 1.8" (127mm x 84mm x 45.5mm)", "Weight:" : "1.4 lbs (0.6kg)", "Shipping size (L x W x D):" : "6.5" x 4" x 3" (165mm x 102mm x 76mm)", "Shipping weight:" : "2.4lbs (1.08 kg)", "Power:" : "15VDC, 30mA, center-pin (+)", "Conditions:" : "For use in dry locations only between 5°C and 40°C" } }

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