USB to Network Interface-Dante

The RDL SF-UN1 converts the left and right channels of a USB audio source into two Dante network audio channels. Its digital signal path keeps the source audio in the digital domain through the Dante network output. The module combines a USB Type B input with a 100 Mbps RJ45 network connection and supports Power over Ethernet for streamlined deployment.

Ideal Use Cases

The SF-UN1 is designed for systems that need to place two-channel USB audio onto a Dante network. It is suitable when the source provides left and right USB audio channels and the destination requires two independently available Dante network channels. Supported USB input sampling rates include 32 kHz, 44.1 kHz, and 48 kHz, covering several common source configurations.

Selectable Dante output rates make the module useful in networks operating at 44.1 kHz, 48 kHz, 88.2 kHz, or 96 kHz. The 48 kHz Dante rate is the default. This selection range allows the interface to accommodate multiple Dante system sample-rate requirements without changing the USB source interface.

Why Choose This Model

The central advantage of the SF-UN1 is its focused conversion path: two USB audio channels enter the module and emerge as two Dante network channels. Audio remains digital throughout this process, avoiding an intermediate analog conversion between the USB source and Dante output.

Module setup does not require special software. Dante audio is transmitted at a supported bit depth of 24 bits, while the network connection operates at 100 Mbps. Power is supplied through PoE Class 0 in accordance with IEEE 802.3af, so the same network connection used for Dante transport can also provide operating power when connected to compatible PoE infrastructure.

Installation and Integration

Connection begins with the rear USB Type B receptacle for the audio input. Network audio and PoE are connected through the RJ45 port, which includes Ethernet Link and Speed indicators. A front-panel Sync indicator provides an immediate view of network synchronization status.

The SF-UN1 is equipped for either SysFlex rack mounting or surface mounting, giving installers two supported placement approaches. The enclosure measures 2.79 inches wide, 1.68 inches high, and 5.77 inches deep, equivalent to 7.09 by 4.27 by 14.66 centimeters. Its specified ambient operating range is 0 degrees C to 50 degrees C.

Because the unit obtains power through IEEE 802.3af PoE and does not require special setup software, its physical and configuration requirements remain centered on the USB source, the Dante network connection, and the chosen mounting method.

Performance Highlights

The input stage supports USB sample rates of 32 kHz, 44.1 kHz, and 48 kHz. On the Dante side, the module supports 44.1 kHz, 48 kHz, 88.2 kHz, and 96 kHz output sample rates, with 48 kHz selected by default. Dante output supports a 24-bit depth.

The 100 Mbps Ethernet interface carries the two converted audio channels using the Dante digital audio Ethernet protocol. Keeping the audio source in the digital domain through the network output is particularly important to the SF-UN1 design: the module performs the required interface conversion without inserting an analog stage into the signal path.

What Makes It Different

The SF-UN1 is purpose-built around a clearly defined task rather than a broad collection of unrelated connections. It converts both left and right USB audio channels, delivers them as two Dante channels, and offers four selectable Dante sample rates. The combination of 24-bit Dante support, PoE operation, and software-free module setup creates a concise integration path.

Its indicators are also positioned to support installation checks: Ethernet Link and Speed indicators are located on the rear panel, while Sync status is visible from the front. SysFlex rack and surface mounting support further distinguishes the module as an interface intended for fixed system integration.

Final Assessment

The RDL SF-UN1 is a direct solution for converting stereo USB audio into two Dante network channels. It supports three USB input sample rates, four selectable Dante output rates, 24-bit Dante audio, and 100 Mbps Ethernet. With IEEE 802.3af PoE power, front and rear status indicators, and rack or surface mounting options, it provides the documented essentials for integrating a two-channel USB source with a Dante network.