1 Ch Bi-Directional (2 Way) Line-Level XLR Balanced Audio Over Fiber Extender to 20 Km SMF or 500 Meters MMF, Providing 16-bit or 24 bit Audio Quality


Regular price $399.00



  • 1 Channel Bi-directional (2 way) Line-Level (not Mic-Level) balanced audio XLR female and male. Transmission distance 20 Km over 1 core Single-mode Fiber or 500 meters on Multi-mode Fiber;not directly support Mic-Level Audio.
  • So It can not directly with the Microphone, if the Audio is from Microphone, the user need other devices like DJ controller/ Audio MIxer which has Amprifier function to work with our Extender. if the microphone is Dynamic type and need to directly connect with our Extender, please select our this item.
  • Supports 16-bit or 24-bit digitally encoded broadcast quality balanced audio
  • Plug and Play design ensures adjustment-free installation and operation without adjusting the optical power level.
  • Easy stand-alone or rack-mount installation. LED indicators monitor the system operating status.
  • Application of Rental, Staging, Theater, Stadiums, Theme Parks, Broadcast/Studio, CCTV audio and Professional AV applications, etc


BY-XLR-351 is 1 Ch Bi-directional (2 ways) Balanced Audio Fiber Extender to 20 Kilometers 1 core SM Fiber or 500 Meters 1 MM Fiber, Broadcast Quality Balanced Audio (3 Pin XLR) Fiber Extender, supports 16-Bit or 24-Bit digitally Encoded Audio.

Caution:   The Input & Output Audio should be connected with the Line-Level & Balanced Interface of the DJ controller or Audio Mixer,  if not,  the wrong connection could damage our devices or no sound out.  for more,  please check the Images of Application 1 & 2.

Wavelength: 1310nm 
Output Power: -14~ -8 dBm
Supported Optical fiber: 50/125u multimode,62.5/125u multimode,9/125u single mode
Rx sensitivity: -30dBm
Optical connector: 1 x SC, 1 x LC, 1 x FC, 1 x ST are optional
Distance: 0~500 Meters over MMF, 0~20 Kilometers over SMF
Balanced Audio:
Number of Channels:1 (two ways) 
Input Connector: 3 Pin XLR(female)
Output Connector: 3 Pin XLR(male)
Input / Output Impedance:10K Ohm
Input capacitance LINE inputs:10 pF
Max input/output voltage: +4 dBu (1.228 Volts).  if over the limit,  the audio distortion will appear.
Frequency Response:10 Hz~24kHz @±3dB
Sample Rates From: 48kHz
SNR:> 80dB
Electrical & Mechanical:
Input Power Requirements:DC 5V@2A
Power: AC 90V~240V
Power Consumption:< 5W
Stand-Alone Dimensions:168 mm × 154 mm × 45 mm
Shipping Weight:(include Transmitter & Receiver ) 2.5kg
Operating Temperature:-20°C ~ +75°C
Storage Temperature:-40°C ~ +85°C
Relative Humidity:0% ~ 95% (non-condensing)
MTBF:>100,000 hours

Package contains:
1. 1 x transmitter with optical module.
2. 1 x receiver with optical module.
3. 2 x Power Supply Adapter with US/EU/UK/AU plug. 
About shipment:
Once order received, we will worldwide deliver by DHL Express for about 1 week delivery.

Or shop on Amazon with worldwide Shipment (Free & Expedited)

BY-XLR-351 (1 Ch 2 way, 16 Bit Version)

BY-XLR-351-24B (1 Ch 2 way, 24 Bit Version) 

BY-XLR-351 (1 Ch 2 way over 1 fiber)

or Directly Contact us at sales@transwan.com.cn for offline transaction.