Sound Devices A20-RX 2-Channel Digital Wireless Receiver

Two-Channel Digital Wireless Receiver with Full-Spectrum Coverage
The Sound Devices A20-RX is a premium two-channel true diversity digital wireless receiver designed for professionals who need flexibility, power, and RF clarity in demanding environments. Whether you're working on location for film, TV, ENG, or event production, the A20-RX delivers uncompromising audio quality across the widest tuning range in the industry—from 169 MHz all the way to 1525 MHz in a single unit. With compatibility across the A20-Mini, A20-TX, A20-HH, and all tuning ranges of the A10-TX, it’s the ideal solution for a flexible, future-proof RF workflow.

SpectraBand Technology Covers Every Frequency Range You Need
The A20-RX features Sound Devices’ industry-exclusive SpectraBand technology, which enables access to the entire VHF and UHF broadcast spectrum in a single receiver. This means you can scan, lock, and operate across a massive range of frequencies—far beyond conventional receivers restricted to fixed blocks. Whether you’re in a congested urban location or a remote production area, SpectraBand allows you to locate open spectrum and deploy with confidence.

Reliable Performance in Noisy RF Environments
Built with advanced brick-wall SAW (Surface Acoustic Wave) filtering, the A20-RX is engineered to reject out-of-band interference that plagues less advanced systems. Its true diversity architecture uses four separate RF receivers—two per channel—to ensure consistent reception with minimal dropouts. This design is critical for productions using multiple transmitters or shooting in high-interference locations with nearby IFB or camera-hop signals.

Fast Frequency Coordination with AutoAssign
The built-in AutoAssign feature accelerates setup by scanning the entire tuning band and automatically selecting the cleanest available frequencies. This simplifies wireless deployment, especially in fast-paced scenarios with limited prep time. Whether you’re setting up for a documentary shoot, multi-cam interview, or live broadcast, AutoAssign gets your frequencies locked in fast, so you can focus on the mix.

Optimized for SuperSlot and Standalone Use
The A20-RX is fully compatible with the SuperSlot standard and integrates seamlessly with the Sound Devices SL-2 and 8-Series mixer-recorders. It also supports XLR and TA3 analog adapters, as well as the A-RXMON headphone amp and A-15PIN two-channel AES adapter for Sony camera slots. Whether mounted in a bag, camera slot, or on a mixer, the A20-RX is a versatile receiver that adapts to your preferred workflow.

Gain Control Made Simple with GainForward Architecture
Paired with A20 transmitters or the A10-TX, GainForward allows you to set gain levels directly on your mixer or on the A20-RX itself, depending on your setup. There's no need to access the transmitter once it’s placed on talent—saving time and reducing on-set interruptions. You maintain clean, transparent audio without the risk of overloading or under-gaining the signal.