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A4928 • Single Output Microphone/Line Hub 


Cat. Page 68


  • $185.00
  • 2+ $170.00
  • Price per each
  • Includes GST


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Last updated 1-10-19 11:20:13

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Microphone/Line Pre Amplifier Wallplate


  • $175.00
  • 2+ $160.00
  • Price per each
  • Overview
  • Specifications
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This single output microphone/line hub is designed to accept audio from a preamp wallplate (A 4931) or box (A 4932). Accepts either a microphone or line input and converts the signal to a balanced high level output. The 3V output signal is carried via Cat5e cable, (suitable for distribution up to 300m without interference) back to the A 4928 hub. Wallplate microphone input is via a balanced XLR whilst the line input is via 2 x RCA sockets or 3.5mm audio jack for portable devices with a lower level line output.

The A 4928 hub has a dedicated balanced or unbalanced output, with volume control. Output has DIP switch selectable balanced mic/line, or unbalanced line level output which can be fed directly into amplifiers. Powered by 24V DC from the supplied plugpack.


  • Connects to A 4931 Microphone/Line Pre-Amplifer Zone Wallplate or A 4932 Zone Preamp Box.
  • Easy Cat5e/6 UTP data cabling connection.
  • Up to 300m cable runs out to wallplate/box.
  • Balanced Euro terminal block connections.
  • Balanced mic or line level operation.
  • 24V DC operation.
  • Australian designed & assembled.

100% developed, designed & assembled in Australia.
Since 1976 Redback PA products have been manufactured in Perth, Western Australia by Altronics. With over 40 years experience in the commercial audio industry, we offer consultants, installers and end users reliable products of high build quality with local product support. Read more about our Australian Made products

Backed by an industry leading 10 Year Manufacturer Warranty.
Our Redback products have a long tried and tested history of bulletproof reliability. Altronics offers a 10 Year Warranty on all Australian Made Redback products. Our local in-house service department has all the know how to answer technical queries and provide timely service. Read more about our industry leading warranty.


  • Input Mic Level Sensitivity: 3mV
  • Input Line Level Sensitivity: 1V
  • Music Input Level Sensitivity: 500mV
  • Output Connector: RJ45 8P8C

*Specifications are subject to change without notice.

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