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Listen Technologies LR400-150


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Product Overview

The LR-400-150 Portable Display FM Receiver is our most popular model of receiver.

This receiver is excellent for assistive listening, language interpretation, tour group or personal use – anywhere transmitted audio is need to be received. The LCD display is this receivers most desired feature – it makes it easy to view the selected channel, battery life, channel lock, and RF signal strength.


Can be tuned to all frequencies available in our 150 MHz products; once a frequency is selected it can be locked to
prevent tampering.

The LR-400-150 offers exceptional audio quality and convenient recharging options. Whether it’s voice or music, the LR-400-150 allows everyone in the audience to have a personally enhanced audio experience.


  • Look & Listen™ LCD shows channel, battery status, channel lock and signal strength
  • Superior audio quality – 80 dB signal-to-noise ratio (SNR), setting the industry’s sound quality standard
  • With a choice between 32 channels, Listen products are ideal for a wide range of applications
  • 100 % Digital – Listen receivers are digitally-tuned so the transmission won’t drift; assurance that when you select a channel, it stays on the channel
  • Limited Lifetime Warranty with hassle-free support
  • Uses standard alkaline or nickel-metal hydride
    (NiMH) batteries
  • Built in SmartCharge™ won’t allow batteries to overcharge
  • Charging circuitry is conveniently built into Listen’s receivers


Full specifications are available under the Downloads tab above

  • RF Frequency Range: 150.8000 MHz - 152.3500 MHz
  • Number of Channels: 6 wide band, 26 narrow band
  • Sensitivity: .6uV typical, 1 uV maximum for 12 dB sinad
  • Frequency Accuracy: ± .005% stability 32 to 122 ºF (0 to 50 ºC)
  • Antenna: Uses earphone cable
  • Squelch: Programmable in 20 steps, automatic on loss of RF signal
  • System Frequency Response: 50 Hz - 15 kHz (±3 dB)
  • System Signal to Noise Ratio: SQ enabled 80 dB, SQ disabled 60 dB
  • System Distortion: <2% total harmonic distortion (THD) at 80% deviation
  • Output: 3.5 mm connectors, unbalanced, 0 dBu nominal output level

Product Downloads

  • LR400-150 Data Sheet PDF 0.1 MB
  • LR400-150 Manual PDF 0.6 MB


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*Prices are in AUD, include GST and are subject to change. Please call National Audio for pricing and availability on the LR400-150.