Sound Devices A20-Nexus Multichannel receiver 470-1525MHz SpectraBand


The next-generation A20-Nexus is expandable from 8 channels up to 12 and 16 with additional software and features forward-thinking technologies like SpectraBand, the powerful NexLink remote-control link, real time spectrum analysis, and more.

✔️ Expandable up to 12 & 16 Channels

✔️ NexLink remote-control link

✔️ SpectraBand (470-1525MHz)

✔️ Real time spectrum analysis (RTSA)


Available on backorder

The future of wireless audio is here!

Introducing the Sound Devices A20-Nexus, a half-rack receiver with all the features of a full-sized rack. As a next-generation device, the A20-Nexus not only offers the ability to be expanded from 8 to 12 and 16 channels with additional software, but also comes equipped with advanced technologies like SpectraBand, NexLink remote control, real-time spectrum analysis, and more. Furthermore, this receiver offers a wide range of features and capabilities in a compact form factor, making it a valuable addition to any professional’s wireless toolkit. In short, this receiver offers a wide range of features and capabilities in a compact form factor. With multiple options for audio outputs, power, and remote control, the A20-Nexus can adapt to your workflow seamlessly, both now and in the future.


Control your A20-Mini transmitter with the built-in long-range remote control link. NexLink’s advanced long-distance modulation extends the range of the A20-Mini’s wireless audio transmission even further.

Network capabilities

The Sound Devices A20-Nexus offers flexible networking options. For example, you can use the built-in web server with any computer, tablet, or phone to control the A20-Nexus from any location with an Ethernet connection. Additionally, you can power the receiver remotely with Power-over-Ethernet (PoE) and deliver audio via Dante. In short, the possibilities are endless with this versatile receiver.

GainForward Architecture

Easily set the gain, low-cut, and limiter on your A20-Nexus or mixer-recorder directly from the receiver. With GainForward Architecture, you can control gain locally without having to adjust it on the transmitter. This means no more fiddling with tiny buttons or trying to reach awkward spots. Just set it and forget it.

Real-time spectrum analysis

Gone are the days of waiting for scan results. Visualise the RF spectrum in real-time and coordinate frequencies while monitoring audio. The Sound Devices A20-Nexus’s real-time spectrum analysis makes it easy to avoid interference and ensure clear audio transmission.

Cableless design

Thanks to its compact size, the A20-Nexus can be used in a rack, a bag, or docked to an 8-Series mixer-recorder for a cableless setup. Its half-rack design makes it versatile and easy to transport.


The A20-Nexus is part of the growing lineup of Sound Devices Astral™ wireless technology. With features like SpectraBand, GainForward, NexLink, long-range modulation, real-time spectrum analysis, and more, the Astral Series pushes the boundaries of wireless audio.


Key Features

8-channel ultra-high-performance, true-diversity receivers in a ½ rack size (8.0” x 6.6” x 1.6”). Wide, 6.2” color OLED array with touch for control and monitoring.
Expandable to 12 or 16 channels via additional software license (coming soon). Each +4 channel software expansion is priced at $2500 USD. Integrated Real Time Spectrum Analyzer (RTSA) and scanning for intuitive frequency coordination.
470 MHz – 1525 MHz tuning range via SpectraBand Technology. Optical Fiber Network option via SFP slot. SFP accepts a wide variety of modular network transceivers. A20-QuickDock allows docking and undocking in seconds from 8-Series mixer-recorders with no tools.
NexLink: an advanced long-distance modulation that reaches even farther than the A20-Mini’s long-range wireless audio transmission and functions separately or alongside A20-Remote. Modular design: RF section (A20-Nexus) can be disconnected and remoted from 8-Series, as opposed to less-flexible integrated RF/Mixer/Recorder solutions.
Dante audio-over-IP of RF receiver audio. All NexLink control is handled by A20-Nexus and/or its Web App instead of the 8-Series for maximum flexibility.
Flexible powering: via PoE+, DC input, 8-Series, or AC mains (with optional adapter). Full remote power-down: A20-Minis can be fully powered down via NexLink for excellent battery life. This alleviates the need for remote auto-RF-Power adjustment schemes. User is in full control of RF power settings.
Web App control from browser on any computer, smartphone or tablet. Supports GainForward Architecture: No gain setting on the A20-Mini transmitter. Adjust gain at the receiver or mixer.
Full remote operation capability: Power via PoE, audio via Dante, control via Web App. 100% digital long-range modulation delivers the longest transmission distance of any system on the market.
Dual DB-25 connectors for 16 channels of mic, line, or AES outputs Excellent audio quality, full 10 Hz – 20 kHz audio bandwidth.
Convert 16 channels of Dante to analog and/or AES on DB25 connectors, for sending IFB, voice-of-god, and more from mixer to set. RF SAW filters for excellent rejection of interference  from nearby IFB or camera hop transmitters.
  BNC timecode input for auto timecode sync of transmitters over NexLink


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