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AudioControl BLX-1K Now Shipping

Signal extender sends and receives an analog audio signal up to 1000 feet over standard Cat5/6 cable.

Professional AV installers often encounter projects that require long cable runs, and the AudioControl BLX-1K has been engineered as a premium, simple solution to efficiently address these challenges. The BLX-1K is a signal extender that sends and receives a fully balanced, noise-rejecting, analog audio signal up to 1000 feet over standard Cat5/6 cable.

AudioControl BLX-1K

Designed to be used in pairs at both ends of the signal path, each BLX-1K contains a 2-channel receive stage as well as a 2-channel transmit stage, enabling audio to travel in both directions across a span of standard Cat5/6. Once wired connections are made, the A/B button on one unit is pressed to reverse the signal path. Signal gain can then be set to complete the installation. The BLX-1K comes equipped with a 24 VAC transformer for easy connection and ultra-quiet performance.

The BLX-1K delivers a stout output of nearly 8 volts RMS with a low noise floor, providing a pure audio signal over long Ethernet runs.


  • Send/receive high quality audio up to 1000 feet
  • High gain, low noise outputs
  • Simple connection with one-button setup
  • Supports standard Cat5/6 cable
  • Separate balanced line driver and receiver stages
  • Independent gain and attenuation controls
  • Ground lift option (when using shielded Cat5/6)
  • Integrated mounting brackets

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