Sound Devices A20-Nexus Receiver

$14,495.00 USD

Sound Devices A20-Nexus — wideband half-rack receiver expandable from 8 channels up to 16 channels with software licenses.

In Stock in US



Sound Devices A20-Nexus Receiver

The Sound Devices A20-Nexus is a wideband half-rack receiver expandable from 8 channels up to 16 channels with software licenses. The A20-Nexus features forward-thinking technologies like SpectraBand, the powerful NexLink remote-control link, real time spectrum analysis, and more. With multiple options for audio outputs, powering, and remote control, the A20-Nexus can seamlessly adapt to your workflow, both now and in the future.

• 8-channel ultra-high-performance, true-diversity receivers in a ½ rack size (8.0” x 6.6” x 1.6”).
• Expandable to 12- or 16-channels via software license (coming soon).
• 470 MHz – 1525 MHz tuning range via SpectraBand Technology.
• NexLink: integrated, long distance remote control of all wireless transmitters
• Dante audio-over-IP of RF receiver audio.
• Flexible powering: via PoE+, DC input, 8-Series, or AC mains (with optional adapter).
• Web App control from browser on any computer, smartphone or tablet.
• Full remote operation capability: Power via PoE, audio via Dante, control via Web App.
• Dual DB-25 connectors for 16 channels of mic, line, or AES outputs
• 16 channels of Dante audio-over-IP output to DB25 connectors on the back panel.
• Wide, 6.2” color OLED array with touch for control and monitoring.
• Integrated Real Time Spectrum Analyzer (RTSA) and scanning for intuitive frequency coordination.
• 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.
• Supports GainForward Architecture: No gain setting on the A20-Mini transmitter. Adjust gain at the receiver or mixer.
• 100% digital long-range modulation delivers the longest transmission distance of any system on the market.
• Excellent audio quality, full 10 Hz – 20 kHz audio bandwidth.
• 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

SpectraBand technology delivers a tuning range of 470 – 1525 MHz in a single unit – an industry first. Experience ultimate flexibility as you find open spectrum away from the crowded UHF TV band. The included A20-Monarch antennas can receive the entire 470-1525 MHz range, keeping your kit small and tidy.

Control your A20-Mini transmitter using the built-in long range remote control link. NexLink’s advanced long distance modulation reaches even farther than the A20-Mini’s long-range audio transmission.

Network away
You’ve got options. Configure your A20-Nexus for Dante audio, use the built-in web server to control the receiver using the web browser on any computer, tablet, or phone, and even power the A20-Nexus remotely using Power-over-Ethernet (PoE).

Real time spectrum analysis
The days of waiting for a frequency scan to complete are over. Instantly visualize the fluctuating RF spectrum around you in real time – while running all channels of the audio.

With the A20-Mini’s GainForward Architecture, easily set the Mini’s gain, low-cut, and limiter directly on your A20-Nexus or mixer-recorder. This immediate, local control of gain means never having to adjust the gain on the transmitter again.

Go cableless
Thanks to its half-rack size, the A20-Nexus is equally at home in a rack, in a bag, or docked to an 8-Series mixer recorder for a cableless kit.

Long range
The A20-Nexus and A20-Mini deliver the longest transmission distance of any system on the market.¹ The state-of-the-art, 100% digital long-range modulation offers the same great audio quality (10 Hz – 20 kHz) as our Standard modulation scheme with a longer range for both line-of-sight and heavy multipath transmission.

Shoot for the stars
The A20-Nexus joins the growing lineup of Sound Devices Astral™ wireless products. With industry-leading features like SpectraBand, GainForward, NexLink, long range modulation, real time spectrum analysis, and more, the Astral Series pushes the bounds of wireless audio.

Whats in the Box?

• 2 x A20-Monarch SpectraBand antennas
• 2 x Articulating arm with clamp and 1⁄4-20 thread mount
• 2 x 30in/75cm BNC – BNC cable
• 2 x 2.4GHz SMA Tilting antenna
2 x NexLink side mounting brackets with SMA to SMA cable


A20-Nexus Specifications



· 470 to 1525 MHz (1055 MHz switching bandwidth)

· 25 kHz steps

· SpectraBand Technology for maximum rejection of out-of-band signals

· Available frequencies depend on country of operation


· Proprietary, 100% digital RF modulation

· Standard or Long Range, selectable per channel

Spurious Rejection

· >100 dB typical

Cascade output

· 50 ohm

· 3 dB Insertion Loss from front BNC through rear BNC: It is recommended to use an external powered antenna to overcome the 3 dB splitting loss in the Nexus so that the receivers maintain excellent range.

· Wideband power split, pre-LNA

RF Bias output

· 12V, 200 mA each BNC

· Smart antenna support, Wisycom-compatible




· Standard modulation = 2 ms, analog or digital outputs

· Long Range modulation = 3.9 ms, analog or digital outputs

Audio Frequency Response

· 10 Hz–20 kHz, +/- 1 dB relative to 1 kHz

Dynamic Range

· > 130 dB with A20-Mini as transmitter

Output Level

· Line-level: +20 dBu for 0 dBFS

· Mic-level: -20 dBu for 0 dBFS

Digital Audio Output

· AES3 balanced connection, 110 ohm output impedance




· DC Input: dual, redundant

· PoE+: 802.3at, 30W needed (standard 15W PoE 802.3af will not work)

· 8-Series (through unit-to-unit connector when docked)

· AC mains adapter (sold separately)


· DC input, 10 to 18V in, 2A min

· 11 W idle, default configuration

· Extra power passed through for USB power, active antenna power, and DC output power

· USB-A: 5V, 500 mA output; supports keyboards, thumb drives, A20-Mini transmitters, and USB hubs


Operating Temperature Range

· -10 °C to +55 °C

Dimensions (H x W x D)

· 4.0 cm x 20.3 cm x 16.7 cm

· (1.6 in x 8.0 in 6.6 in)


· 1.27 kg (unpackaged)

· 2.8 lbs (unpackaged)

Specifications are subject to change without prior notice. For the latest information available on all Sound Devices products, visit

Patents: The A20-Nexus is protected by US patents US10678294B2, US20190166523A1, International patent WO2018022209A1, and several patents pending.