SOUND DEVICES A20-Nexus Go

Sound Devices A20-Nexus Go (Astral ARX8) — 4-Channel Portable Digital Wireless Receiver, Expandable to 8 Channels

The A20-Nexus Go is the flagship portable receiver in the Astral wireless ecosystem — a true-diversity 4-channel digital receiver that fits in a production bag and expands to 8 channels via software license without adding hardware. Powered by SpectraBand technology, NexLink long-range remote control, and full integration with the Sound Devices 8-Series, it's engineered for the most demanding location sound workflows.

Compatible with A10-TX, A20-TX, and A20-Mini transmitters.

Key Features

• 4 channels of true-diversity reception in a portable chassis, expandable to 6 or 8 channels via 2-Channel Expansion License (no hardware change required)
• SpectraBand technology: 169-1525 MHz tuning range (VHF + UHF in a single receiver) — the widest tuning range in the Astral ecosystem
• Brick-wall SAW filtering for excellent immunity from DTV, IFB, and camera-hop interference
• NexLink long-range remote control: control all paired A20-TX and A20-Mini transmitters directly from the Nexus Go — record start/stop, gain, frequency, sleep/wake, even at long distance
• AutoAssign frequency scanning with real-time RF spectrum visualization
• 2 ms latency (Standard modulation), 3.9 ms (Long Range)
• Full 10 Hz to 20 kHz audio bandwidth, 100% digital RF
• GainForward Architecture: full mic dynamic range delivered to the mixer
• Integrated antenna distribution with 12 V powering for active antennas (Wisycom ADFA, LFA)
• Dante audio over Ethernet: AES67-compatible, 8 channels in/out
• AES3 digital outputs for direct connection to 8-Series
• Analog outputs via TA3 connectors
• USB-C for transmitter pairing, file transfer, firmware updates
• Sunlight-readable color display with intuitive multi-channel overview
• Expansion licenses: permanent purchase or rental options for 4→6 channel and 6→8 channel upgrades

Specifications

• RF tuning: 169-1525 MHz, SpectraBand technology, 25 kHz tuning steps (UHF range covered by included A20-Monarch antennas; VHF 169-236 MHz requires the optional A-VHF-Dipole-BNC antenna)
• Receiver topology: True diversity, 2 RF receivers per channel
• Channels: 4 standard, expandable to 6 or 8 via license
• Modulation: Proprietary digital RF, Standard or Long Range, menu-selectable
• Latency: Standard 2 ms / Long Range 3.9 ms
• Audio frequency response: 10 Hz - 20 kHz
• Audio outputs: AES3 digital, analog (TA3), Dante (8 ch I/O over Ethernet)
• Antenna distribution: Built-in, 12 V bias powering for active antennas
• NexLink remote: Long-range 2.4 GHz control of paired A20 transmitters
• Power: External DC, multiple battery options
• Display: Sunlight-readable color, multi-channel overview
• Connectivity: USB-C (file transfer, pairing, firmware), Ethernet (Dante), TA3 audio outs

2-year warranty when registered at sounddevices.com.