XLR Audio over Fiber
8-Channel Bi-Directional Balanced XLR Audio over Fiber (Rack-Mount)
Product Overview
The F-8A-XLR-B-TxRx-RM is a professional, broadcast-grade 8-channel bi-directional balanced analog audio over fiber system, designed for long-distance, noise-immune transport of high-quality XLR audio signals. Each unit functions as both a transmitter and receiver, allowing simultaneous two-way audio transport over a single fiber strand.
Using optical isolation, the system completely eliminates ground loops, EMI, and RF interference, making it ideal for broadcast, studio, live production, stadiums, campuses, and industrial environments where long cable runs and electrical noise are a concern.
The unit supports 8 balanced XLR inputs and 8 balanced XLR outputs, enabling 8 audio channels in each direction at the same time. The rack-mount enclosure makes it suitable for fixed installations and professional headend environments.
Typical Applications
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Broadcast studios and TV stations
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Audio links between control rooms and studios
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Live sound and event production
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Stadiums and arenas
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Houses of worship
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Campus and facility intercom/audio distribution
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Industrial and high-EMI environments
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Audio transport between buildings without ground-loop risk
System Architecture
Each F-8A-XLR-B-TxRx-RM unit operates as a bi-directional node:
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8 XLR inputs → transmitted over fiber
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8 XLR outputs ← received from fiber
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A pair of identical units is required to form a complete link
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Audio is transported uncompressed and in real time
Key Features
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8 bi-directional balanced XLR audio channels
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Simultaneous transmit and receive on all channels
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Single-fiber operation (Tx/Rx on one strand)
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Analog, uncompressed audio transport
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Balanced XLR (mic/line-level compatible)
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No latency, no compression
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Immune to EMI, RFI, and ground loops
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Long-distance transmission over fiber
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Rack-mount metal enclosure
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Broadcast- and studio-grade reliability
Uni-Directional Models:
F-2A-XLR-TX/RX - 2 XLR Balanced Audio over Fiber Transmitter / Receiver kit up to 20KM singlemode / 3000feet multimode -Stand alone ( portable)
F-4A-XLR-TX/RX - 4 XLR Balanced Audio over fiber Transmitter / Receiver kit up to 20KM singlemode / 3000feet multimode - Stand alone ( portable)
F-8A-XLR-TX/RX-RM - 8 XLR Balanced Audio over fiber Transmitter / Receiver kit up to 20KM singlemode / 3000feet multimode 19"Rack Mountable
F-16A-XLR-TX/RX-RM - 16 XLR Balanced Audio over fiber Transmitter / Receiver kit up to 20KM singlemode / 3000feet multimode (special order) 19"Rack Mountable
F-32A-XLR-TX/RX-RM - 32 XLR Balanced Audio over fiber Transmitter / Receiver kit up to 20KM singlemode / 3000feet multimode (special order) 19"Rack Mountable
Bi-Directional Models:
F-2A-XLR-B-TX/RX - Stand alone ( portable) 2 Bi-directonal XLR Balanced Audio over 1 fiber Transmitter / Receiver (transceivers) kit up to 20KM singlemode / 3000feet multimode
F-2A-XLR-B-TX/RX-RM 2 Bi-directonal XLR Balanced Audio over 1 fiber Transmitter / Receiver (transceivers) kit up to 20KM singlemode / 3000feet multimode - 19"Rack Mountable form factor
F-4A-XLR-B-TX/RX-RM - 4 Bidirectional XLR Balanced Audio over 1 fiber Transmitter / Receiver (transceivers) kit up to 20KM singlemode / 3000feet multimode 19"Rack Mountable form factor
F-8A-XLR-B-TX/RX-RM - 8 Bidirectional XLR Balanced Audio over 1 fiber Transmitter / Receiver (transceivers) kit up to 20KM singlemode / 3000feet multimode 19"Rack Mountable form factor
PN: F-4A-XLR-TX/RX-XX ( XX= 40,60,80,120) 40km, 60Km, 80km 120km models available for all XLR Audio products (special order)

| Parameter | Specification |
|---|---|
| Audio Channels | 8 balanced XLR bi-directional (8 Tx + 8 Rx) |
| Audio Type | Analog balanced audio |
| Connector Type | XLR (female inputs / male outputs) |
| Direction | Simultaneous bi-directional |
| Audio Level | Line level (mic/line compatible depending on system configuration) |
| Frequency Response | 20 Hz – 20 kHz |
| Signal-to-Noise Ratio | ≥ 90 dB |
| Distortion (THD) | < 0.01% |
| Latency | Zero / real-time |
| Optical Interface | Single-mode fiber |
| Fiber Connector | LC / SC (model-dependent) |
| Fiber Type | Single-mode |
| Transmission Distance | Up to 20 km (standard), longer distances optional |
| Optical Wavelength | 1310 nm / 1550 nm (WDM) |
| Power Supply | AC 100–240 V or DC (model-dependent) |
| Form Factor | Rack-mount (1U) |
| Operating Temperature | 0°C to +50°C |
| Housing | Metal enclosure |
