The balanced audio fiber optic transceiver is a fiber‑optic device for long‑distance fiber transmission of 1‑16‑channel XLR balanced analog audio signals, supporting simplex or bi‑directional transmission. The front‑end balanced audio signal feeds directly into the unit, then transmits over fiber and outputs at the far end to power active speakers or drive loudspeakers via power amplifiers. It adopts 10‑bit digital audio encoding, and its system performance meets or exceeds broadcast‑grade Class‑A standards.
Widely deployed in radio & television, sports stadiums, exhibition shows, video conferences, stage performances and other scenarios requiring long‑distance audio transmission.
Uncompressed analog audio transmission over fiber
Single‑mode single‑fiber design; FC / LC fiber connectors optional
Default transmission distance: 20 km; extended distance options from 20 km to 120 km available
Hot‑swap supported
10‑bit video A/D conversion, 24‑bit audio A/D conversion
Multi‑channel options over single / multi‑core fiber: 2‑CH (bi‑directional) / 4‑CH (bi‑directional) / 8‑CH (bi‑directional) / 16‑CH (bi‑directional)
Support for special‑function customization
| Item | Specification |
|---|---|
| Audio Channels | 1‑16 channels |
| Audio Input Connector | XLR Female |
| Audio Output Connector | XLR Male |
| Input / Output Impedance | 10k ohm |
| Input Capacitance | 10PF |
| Max. Input / Output Voltage | 3.0 VP‑P |
| Frequency Response | 10 Hz ~ 24 kHz @ ±3 dB |
| Sampling Rate | 48 KHZ |
| Signal‑to‑Noise Ratio (SNR) | > 90 dB |
| Item | Specification |
|---|---|
| Optical Transmit Power | -14 ~ -8 dBm / -5 ~ 0 dBm |
| Fiber Connector | FC (LC optional) |
| Wavelength | 1310 nm & 1470 nm ~ 1610 nm |
| Receiver Sensitivity | -14 ~ -8 dBm / -5 ~ 0 dBm |
| Recommended Max. Transmission Distance | Single‑mode fiber: 20 / 40 / 60 / 80 km |
| Item | Specification |
|---|---|
| Power Supply | Desktop unit: DC12V/1A; 1U / 2U / 4U rack‑mount unit: AC220V |
| Max Power Consumption | MAX 4W |
| Operating Temperature | -5℃ ~ +70℃ |
| Operating Humidity | 5% ~ 90% RH (non‑condensing) |
| Rack Form Factor | Standard 1U rack‑mount available |
| Warranty | 1‑year free warranty |
The transmitter (TX) connects audio sources such as mixing consoles and microphones via XLR ports. Audio signals are converted into optical signals and transmitted over single‑mode fiber cable to the receiver (RX). The receiver converts optical signals back to balanced analog audio and outputs to power amplifiers and loudspeakers. It realizes long‑distance lossless audio delivery for professional audio systems.

| Product Name | Model | Unit |
|---|---|---|
| 1‑Channel XLR Audio Fiber Optic Transceiver | PAC‑OAK0101 | Pair |
| 2‑Channel XLR Audio Fiber Optic Transceiver | PAC‑OAK0201 | Pair |
| 1‑Channel Bi‑directional XLR Audio Fiber Optic Transceiver | PAC‑OAK0101‑D | Pair |
| 4‑Channel XLR Audio Fiber Optic Transceiver (Desktop Box Type) | PAC‑OAK0401 | Pair |
| 2‑Channel Bi‑directional XLR Audio Fiber Optic Transceiver (Desktop Box Type) | PAC‑OAK0201‑D | Pair |
| 4‑Channel XLR Audio Fiber Optic Transceiver (1U Rack‑mount Type) | PAC‑OAK0401 | Pair |
| 2‑Channel Bi‑directional XLR Audio Fiber Optic Transceiver (1U Rack‑mount Type) | PAC‑OAK0201‑D | Pair |
| 4‑Channel Bi‑directional XLR Audio Fiber Optic Transceiver (1U Rack‑mount Type) | PAC‑OAK0401‑D | Pair |
| 8‑Channel XLR Audio Fiber Optic Transceiver (1U Rack‑mount Type) | PAC‑OAK0801 | Pair |
| 8‑Channel Bi‑directional XLR Audio Fiber Optic Transceiver (1U Rack‑mount Type) | PAC‑OAK0801‑D | Pair |
| 16‑Channel XLR Audio Fiber Optic Transceiver (1U Rack‑mount Type) | PAC‑OAK1601 | Pair |