ST-NAUD22USB Dante USB Audio Encoder Decoder is a professional 2-channel USB audio encoder and decoder based on the Dante® Ultimo solution. The ST-NAUD22USB Dante USB Audio Encoder Decoder supports high-quality USB audio transmission over a Dante® network with a built-in USB sound card chip. It features plug-and-play operation, USB power input, and PoE support, making installation simple and reliable for professional audio applications.
The ST-NAUD22USB Dante USB Audio Encoder Decoder is designed for recording studios, conference rooms, broadcasting systems, educational institutions, live events, theatres, art festivals, and commercial AV installations. It delivers stable, low-latency digital audio transmission with excellent performance and seamless integration into Dante® audio networks.
Features
☆ Compliant with USB 2.0 Full Speed Operation
☆ Compliant with USB Audio Device Class Specification V1.0
☆ Analog sound card, supporting MIC input and SPK output
☆ Audio sampling rate supports 44.1kHz, 48kHz, 88.2kHz and 96kHz (24bit)
☆ Dante® solution supports AES67 RTP audio transmission
☆ Supports USB 5V power supply and PoE function (IEEE802.3af Class 0)
☆ Plug and play, no driver installation required
☆ Compact metal enclosure, lightweight and portable
Package Contents
① 1× Dante® 2CH USB Audio Encoder/Decoder
② 1× USB Cable (6FT USB A to USB B)
③ 1× User Manual
Specifications
| Technical |
| Network Bandwidth |
100M |
| Audio Format |
PCM 2.0 44.1kHz / 48kHz / 88.2kHz / 96kHz, up to 24bit |
| Transmission Distance |
328ft / 100m (CAT6/6A) |
| Frequency Response |
20Hz to 20kHz, ±0.1dB |
| Control Method |
Dante® Controller |
| Connection |
| Ports |
1x USB(FROM PC) [USB-B] 1x DANTE(PoE) [RJ45 connector, supporting PoE] 1x Service [Micro USB, used for firmware upgrade] |
| Mechanical |
| Housing |
Metal Enclosure |
| Color |
Black |
| Dimensions |
120mm [W] × 47mm [D] × 26mm [H] |
| Weight |
188g |
| Power Supply |
USB input: 5V – 500mA PoE input: IEEE802.3af Class 0 |
| Power Consumption |
1.05W |
| Operating Temperature |
0°C ~ 40°C / 32°F ~ 104°F |
| Storage Temperature |
-20°C ~ 60°C / -4°F ~ 140°F |
| Operating Humidity |
20% ~ 80% (relative humidity, non-condensing) |
| Storage Humidity |
10% ~ 90% (relative humidity, non-condensing) |
Operation Controls and Functions

| No. |
Name |
Function Description |
| 1 |
Service |
Micro USB port, used for firmware upgrade. |
| 2 |
DANTE (PoE) |
Dante® digital audio input and output port. Connect to the network switch through RJ45 cable, supporting PD power supply. The green LINK LED is always on after normal connection. The yellow DATA LED flashes when there is data transmission. |
| 3 |
USB (FROM PC) |
(1) 2-channel USB digital audio signal port: L/R stereo input and L/R stereo output. (2) USB 5V power input port. |
Application Example
