Description
The ST-NEDA300S Audio Extender transmits digital optical and analog audio signals over a single CAT5E/6 cable up to 300m (990ft) at 48kHz. The ST-NEDA300S Audio Extender supports bidirectional PoC, high-fidelity audio transmission, LPCM, DTS, Dolby Digital, and Dolby Digital Plus, making it ideal for professional AV installations.
The ST-NEDA300S Audio Extender is a plug-and-play solution for extending optical fiber and analog audio between transmitters and receivers in conference rooms, home theaters, multi-room audio systems, amplifiers, and commercial AV applications.
Features
☆ ☆ ST-NEDA300S Audio Extender extends optical fiber and analog audio signals up to 300m/990ft (48kHz), 150m/495ft (96kHz) or 100m/330ft (192kHz) over a single CAT5E/6 cable.
☆ Audio formats support: LPCM, DTS, Dolby Digital and Dolby Digital Plus
☆ Support audio sample rates: 32kHz, 44.1kHz, 48kHz, 96kHz, 176.4kHz and 192kHz up to 24-bit resolution
☆ Built-in DAC (Digital to Analog Converter) — the analog audio output port can output PCM 2.0 digital audio or analog audio through the audio selection switch
☆ Support bidirectional POC function
☆ Plug-and-play
☆ Small compact size
☆ Ultra-low jitter and high-fidelity design
Package Contents
① 1× Audio Extender (Transmitter)
② 1× Audio Extender (Receiver)
③ 1× USB Cable (USB-A to Micro-USB port)
④ 1× User Manual
Specifications
| Technical | |
| Bitrate over Distance | 192kHz — 100m / 330ft | 96kHz — 150m / 495ft | 48kHz — 300m / 990ft |
| Supported Audio Formats |
Optical: All audio formats including LPCM 2.0, LPCM 5.1, Dolby Digital 2/5.1CH Analog: PCM 2.0 |
| Sample Rates | 32kHz, 44.1kHz, 48kHz, 96kHz, 176.4kHz and 192kHz up to 24-bit resolution |
| ESD Protection | IEC 61000-4-2: ±8kV (Air-gap discharge), ±4kV (Contact discharge) |
| Connection – Transmitter | |
| Input | 1× SPDIF IN [Optical Audio Jack] 1× L/R IN [RCA Stereo Audio Jack] 1× Micro-USB |
| Output | 1× CAT OUT [RJ45] |
| Connection – Receiver | |
| Input | 1× CAT IN [RJ45] 1× Micro-USB |
| Output | 1× SPDIF OUT [Optical Audio Jack] 1× L/R OUT [RCA Stereo Audio Jack] |
| Power | |
| Power Supply | DC 5V/1A |
| Power Consumption (Max) | 1.5W |
| Mechanical | |
| Dimensions | 90mm (W) × 72mm (H) × 20mm (D) |
| Weight | 174g (Transmitter / Receiver) |
| Housing | Metal Enclosure – Black |
| Environmental | |
| Operating Temperature | 0°C ~ 40°C / 32°F ~ 104°F |
| Storage Temperature | -20°C ~ 60°C / -4°F ~ 140°F |
| Relative Humidity | 20%~90% RH (non-condensing) |
Operation Controls and Functions
Transmitter
| No. | Name | Function Description |
|---|---|---|
| 1 | Power LED | When the transmitter is powered on, the power LED will be on. |
| 2 | CAT OUT | Connect to the CAT IN port of the receiver with CAT5E/6 cable. |
| 3 | SPDIF IN | Optical fiber audio input port, connected to an optical digital audio source device with Optical Toslink cable. |
| 4 | L/R IN | Analog audio input port, connected to an analog audio source device with RCA cable. |
| 5 | DC 5V | Micro USB power input port. |
Receiver
| No. | Name | Function Description |
|---|---|---|
| 1 | Power LED | When the receiver is powered on, the power LED will be on. |
| 2 | L/R OUT Audio Selection Switch | Use this switch to select audio source for the L/R OUT port. TX L/R: The L/R OUT port outputs the analog audio from the L/R IN port of the transmitter. TX SPDIF: The L/R OUT port outputs the digital audio from the SPDIF IN port of the transmitter. |
| 3 | CAT IN | Connect to the CAT OUT port of the transmitter with CAT5E/6 cable. |
| 4 | SPDIF OUT | Optical fiber audio output port, connected to amplifier or speaker with Optical Toslink cable. |
| 5 | L/R OUT | Analog audio output port, connected to amplifier or speaker with RCA cable. |
| 6 | DC 5V | Micro USB power input port. |
Application Example
