Sound Devices A20-RX

The Sound Devices A20-RX is a two-channel, true diversity receiver that uses SpectraBand technology. SpectraBand gives the A20-RX receiver and A20-Mini transmitter an extremely wide tuning range of 470 MHz – 1525 MHz.

The A20-RX is the successor to the A10-RX.


a20rx spectraband

As the wireless spectrum becomes increasingly crowded, sound professionals need flexibility when it comes to tuning range. The A20-RX is the first receiver on the market that can tune not only in common UHF TV bands around 470 – 608 MHz, but far above that.

SpectraBand eliminates the need for purchasing different wireless receivers dedicated to specific frequency bands. In the USA, the A20-RX can tune to the 600 MHz guard band (614-616 MHz), 600 MHz duplex gap (653-663 MHz), 900 MHz ISM Band (902-928MHz), 900 MHz STL Band (941.5-960 MHz), and, with the appropriate license, the 1.5 GHz AFTRCC band (1435-1525 MHz). This is in addition to the core USA UHF TV band from 470-608 MHz that’s commonly available. Overall, this totals approximately 285 MHz of available spectrum.

In the UK, the A20-RX can tune to the 800 MHz duplex gap (823-832 MHz), 800 MHz guard band (863-865 MHz), and, with a proper license, the DME and 1.5 GHz bands (961-1015 MHz, 1045-1075 MHz, 1105-1154 MHz, 1518-1525 MHz). This is in addition to the core UK UHF TV band from 470-702 MHz that’s commonly available. Overall, this totals approximately 383 MHz.

The A20-RX is the second product in Sound Devices’ first wireless product line. The first product, the A20-Mini transmitter, is also receiving a free firmware upgrade to enable SpectraBand when used with the A20-RX. The A20-RX is also compatible with all tuning ranges of the full-size A10-TX and is SuperSlot compatible with an SL-2 SuperSlot Wireless Module and 8-Series mixer-recorder.

Other features

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The A20-RX also features high-discrimination front-end filtering for better performance in noisy RF environments and Frequency AutoAssign for faster setup.

While tracking filters are common in wireless receivers, the A20-RX uses superior low-loss, brick-wall SAW filters to deliver excellent performance in noisy RF environments. These built-in filters also provide excellent immunity from nearby IFB or camera hop transmitters without the need for external filters or extra cabling. The AutoAssign feature scans a user-designated tuning band and selects available frequencies for the A20-RX’s two channels. This feature is designed to make frequency selection and setting quick and easy.

What is it compatible with?

a20rx family

The A20-RX is compatible with both the A20-Mini and A10-TX transmitters. Sound professionals with the previous A10-RX model, can upgrade the hardware of their receivers to the A20-RX for $995 USD or for a reduced price of $750 USD if they purchased their A10-RX within the last 12 months or an A20-Mini since June 1st.

The A10-RX may be converted to the A20-RX by sending the unit to Sound Devices for a hardware upgrade. Customers can start the upgrade process by visiting service.sounddevices.com/contact-support.

The upgrade program lasts until the end of 2022. I like when companies provide an upgrade path for their products because it shows that they care about their customers and the investment they have made.

The release of the A20-RX coincides with supporting firmware for the A20-Mini, A10-TX, 8-Series, SD-Utility and A20-Remote. To download supporting firmware, visit www.sounddevices.com/download

Price & availability

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The A20-RX is available to purchase for $2,995 USD.

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The A20-RX is available in two versions:

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