The A20-RX from Sound Devices is a dual-channel digital receiver designed for use with the A10-TX and A20-Mini transmitters and featuring a powerful feature set that ensures professional-level reliability, even in noisy RF environments.

SpectraBand technology gives the A20-RX a massive tuning range from 470 to 1525 MHz, allowing for worldwide use, while Advanced Digital True Diversity topology uses two completely independent RF receivers for each channel, providing a total of four receiver circuits for clean reception with fewer dropouts. The system is completely digital, ensuring pristine quality audio and providing extremely long transmission distances with brick-wall SAW filters to eliminate out-of-band interference. The unit's AutoAssign function automatically scans a tuning band and selects clean, interference-free frequencies for you, saving you valuable time on set.

Use with A20-Mini & A10-TX Transmitters    Full-Tuning-Range SpectraBand Technology    True-Diversity Reception    Brick-Wall SAW Filters Cut Interference    10 Hz to 20 kHz Audio Frequency Response    Analog or AES Digital Output    GainForward Architecture    Requires Backplate Adapter

• SpectraBand technology: compatible with the A20-Mini from 470 to 1525 MHz and all tuning ranges of the A10-TX
• Advanced Digital True Diversity topology uses two complete RF receivers for each of the two channels, with four RF receivers in total
• 100% digital long-range modulation delivers the extremely long transmission distances
• GainForward Architecture compatible with the A20-Mini: set the Mini's gain levels via trim control (with an 8-Series) or at the A20-RX (for other mixers)
• Full 10 Hz to 20 kHz audio bandwidth
• Excellent immunity from nearby IFB or camera hop transmitters without the need for external filters or extra cabling
• Analog line-level or AES digital audio output
• A backplate is not included; users can choose between the A-XLR, A-TA3, or A-SL adapters

Related Questions and Answers

Q: 1. What is included in the box?

A: 1 x Blink 500 RX Receiver with Built-In Clip and Camera Shoe-Mount 1 x 1’ (30.5 cm) Gold-Plated 3.5mm TRS to TRS Output Cable for Cameras 1 x 1’ (30.5 cm) Gold-Plated 3.5mm TRRS to TRRS Output Cable for Smartphones and Tablets 2 x 1’ (30.5 cm) Gold-Plated USB-C to USB-A Charging Cables 1 x Pairing Pin

Q: 2. What is the difference in battery life between the NP-BX1 battery and 3 AAA batteries?

A: The Sound Devices A20-Mini Digital Wireless Bodypack Transmitter and Recorder will run for approximately 4.5 hours on the low power setting or approximately 2.8 hours on the high power setting when using the NP-BX1 rechargeable battery. When using three lithium AAA batteries to power the A20-Mini, the approximate battery life is 5.2 hours on the low power setting or approximately 3 hours on the high power setting.

Q: 3. I believe that, in US, you can either record on the unit OR use as a transmitter, but not both at same time. Is that right? If so, why?

A: Simultaneous Record and Transmit mode is not available on A20-Mini units sold or operated in the United States of America. A different manufacturer owns the patent to the technology to do both at the same time.

Q: 4. If this A20 mini cannot record 32 bit float as backup AND transmit audio signal to RX on camera at the same time in USA, what alternative products are out there that can do both at the same time?

A: Unfortunately no, there is not currently a comparable option that is capable of recording in 32-bit and transmit over UHF frequencies at the same time. As of January 2023, this is still proprietary technology.

Q: 5. what is the different between ad4q to ad4d?

A: The Shure AD4Q is a quad-channel receiver, and the AD4D is a dual-channel receiver.

Q: 6. Can one transmitter be paired with two receivers for audio monitoring?

A: No, the Saramonic Blink 500 RX Dual-Channel Camera-Mount Digital Wireless Receiver (2.4 GHz) can only be paired to one receiver.

Q: 7. Is it possible to use manual audio gain also as all 4 channels on a sony a7sIII via MI shoe? (because on older P03D its only automatic and 2 channel)

A: You can use the Sony URX-P41D Dual-Channel Camera-Mount Wireless Receiver together with the Sony SMAD-P5 Digital MI Shoe Adapter for UWP-D Series (B&H # SOSMADP5) to connect to the Sony a7S III MIrrorless Camera via the multi interface shoe. The URX-P41D offers a 4-channel mixer that enables you to control your mic levels (up to four) as well as assign output 1 and/or 2 as needed.

Q: 8. Can two receivers pair to the same transmitter to be used for monitoring?

A: No, the transmitters can only be paired to one receiver. That is the nature of these 2.4 GHz systems unfortunately. The best way to monitor audio is through the camera's headphone output. If you are using a mobile device, you can monitor audio using Bluetooth headphones with some apps like Filmic Pro.

Q: 9. Can this product be tuned to 806-809 MHz for use when traveling to Japan?

A: Yes.

Q: 10. I am interested in purchasing this wireless microphone but am unsure what frequency to purchase. I live in Los Angeles, is there a preferred frequency for my region of the USA?

A: Because the Sony URX-P41D Dual-Channel Camera-Mount Wireless Receiver offers the ability to auto-scan it's 2,772 potential frequencies, it should allow you to find an open channel in virtually all areas in any of the three available bands. Frequency availability across bands could also change depending on your location within the greater Los Angeles area. In general, it appears that the UC14: 470 to 542 MHz band may offer the most access to open channels in Los Angeles out of the three available frequency bands.