AVoIP Encoder – 2 HDMI & USB-C

Ideal Use Cases

The Kramer KDS-SW3-EN7 is suited to AV-over-IP systems that need automatic source switching and 4K video distribution across a 1GbE network. Its two HDMI inputs and one USB-C input accommodate three selectable sources, while unicast and multicast support allows the chosen signal to be streamed in one-to-one or one-to-many configurations.

It is particularly relevant when video, digital or analog audio, USB, and device-control signals must share an integrated distribution workflow. Searchable on-screen KM controls and configurable KVM roaming also support environments in which users need to operate connected systems across the network.

Why Choose This Model

The KDS-SW3-EN7 combines an automatic three-input switcher with an advanced encoder. It streams resolutions up to 4K@60Hz with 4:2:0 color sampling through a 1G network interface over copper cable. Switching between selectable video inputs takes one second, providing a defined transition time when moving between HDMI and USB-C sources.

The encoder can add Dante digital audio, USB, IR, RS-232, and CEC signals. Analog audio embedding and de-embedding are supported alongside Dante embedding and de-embedding, giving the unit capabilities beyond basic video transport. Both unicast and multicast streaming are available, so the same model can serve point-to-point and broader network distribution designs.

Installation and Integration

The unit can be powered through a PoE connection from a PoE LAN switch. Its stated power consumption is 13W without USB-C Power Delivery. With USB-C Power Delivery, consumption is 77W and the optional power supply is required. This distinction should be considered when planning power and USB-C source integration.

A separate service LAN port allows AV and command streams to be physically separated onto different LANs for security and reliability purposes. Control is available through embedded web pages, Protocol 3000 API commands over Ethernet, or the front-panel LCD and navigation buttons. Through P3K or a special TCP connection, the control gateway can communicate with connected devices by IR, RS-232, or CEC.

For decoded output, the provided specification identifies the KDS-DEC7 as decoding the stream to 4K@30Hz with 4:4:4 color sampling. Network capacity, PoE availability, the desired streaming mode, and the optional power-supply requirement should therefore be addressed during system design.

Performance Highlights

The video streaming transmitter supports signals up to 4K@60Hz at 4:2:0 over its 1G network interface. For a 4K@30Hz 4:4:4 video signal, the specified streaming delay is 33 milliseconds. The listed maximum refresh rate is 60Hz.

Selectable-source switching is specified at one second. Unicast operation directs the selected stream from one encoder to one destination, while multicast enables one-to-many distribution. These documented operating modes make the encoder adaptable to systems requiring either a dedicated endpoint or distribution to multiple compatible destinations.

What Makes It Different

The defining feature of the KDS-SW3-EN7 is the combination of three selectable video inputs, automatic switching, 4K encoding, Dante, and networked control in one unit. Its signal capabilities extend beyond video to include USB and multiple control formats, allowing IR, RS-232, and CEC communication with connected equipment.

Audio integration includes both analog embedding and de-embedding and Dante digital-audio embedding and de-embedding. For user interaction, a searchable on-screen display supports KM operation, while KVM roaming is fully configurable. The separate service LAN port adds the option to isolate command traffic from AV traffic rather than carrying both on the same physical network.

Final Assessment

The KDS-SW3-EN7 is a focused choice for 1GbE AV-over-IP distribution requiring two HDMI sources, one USB-C source, automatic switching, and streaming up to 4K@60Hz at 4:2:0. Its strongest advantages are the combination of unicast and multicast support, Dante and analog-audio handling, USB and KVM capabilities, and several integrated control methods.

PoE support can simplify standard operation, while USB-C Power Delivery requires the optional power supply and raises stated consumption from 13W to 77W. For systems designed around these documented video formats, signal types, and power requirements, the model consolidates source selection, encoding, audio handling, and device control into a single network endpoint.