Housed in an ultracompact and water-resistant form factor for reliable use on set, the Sound Devices A20-Mini Wireless Transmitter Recorder 470-1525 MHzis not only an A10-compatible digital wireless bodypack transmitter with full remote control via a companion mobile app, but also a distortion-free, 32-bit float / 48 kHz audio recorder with 64GB internal storage. As a transmitter, it boasts a wide 10 Hz to 20 kHz frequency response, full SpectraBand with a tuning range of 470 to 1525 MHz, and 100% digital RF modulation and transmission, making it a premium unit for professional film and television shoots. Recorded WAV files can be transferred via USB Type-C and even converted or conformed through a companion desktop app to accommodate a range of workflows and user preferences.

GainForward Architecture enables convenient gain staging from the trim controls of an 8-Series mixer or via an A10-RX receiver, so you can easily achieve optimal levels without ever stopping the action. Since the A20-Mini is powered by three AAA batteries or a Sony NP-BX1 battery pack, which can be recharged without removing the NP-BX1, it can hang for long days while ensuring minimal downtime. In addition to having a supercapacitor-powered timecode generator built in, the A20-Mini allows jam syncing via USB Type-C for locking to a camera or dedicated timecode source.

For Demanding Film and Television Shoots    LEMO 3-Pin Lav Input with 5V Bias Power    32-Bit Float Recording Avoids Clipping    Internal 64GB Storage    Full Remote Control via Companion App    Powered by Three AAA Batteries or NP-BX1    Built-In Timecode Generator    Supports Jam Syncing via USB Type-C    Water-Resistant, Rounded Form Factor    Compatible with Sound Devices A10 System

The A20-Mini is the first miniature wireless transmitter from Sound Devices. It combines legendary British audio quality with the best of American design. In addition to being water-resistant, the sleek and rounded form fits perfectly into body contours and underneath tight clothing.

The A20-Mini incorporates state-of-the-art features such as full remote control via the A20-Remote app, GainForward Architecture for convenient hardware gain control, internal 32-bit float recording, a worldwide tuning range of 470 to 1525 MHz, and more. Plus, the A20-Mini is fully compatible with Sound Devices' existing A10 Digital Wireless System.

The A20-Mini records in 32-bit float for an astounding >130 dB of dynamic range. This allows for audio gain decisions to be made after recording, with zero loss in headroom or noise performance.

With the Mini's GainForward Architecture, you can set the Mini's gain, low-cut, and limiter directly on your 8-Series. This immediate, local control of gain allows quick adaptation to changing volume levels and saves time during production.

Available on iOS, iPadOS, and Android phones and tablets with Bluetooth 5.2, A20-Remote is the A20-Mini's companion app. The intuitive interface allows sound professionals to control RF transmit frequency and power (2/10/20/40mW or off), turn the Mini on and off, start and stop recording, mute the microphone, format the media, and more. The A20-Mini's internal, high-efficiency 2.4 GHz antenna ensures excellent Bluetooth range. The A20-Remote app offers easy adjustment of transmitter settings after the unit has been placed on talent, eliminating unnecessary downtime on set.

SD-Utility is a companion application for MacOS and Windows. This application can be used to process files recorded by the A20-Mini to be more suited to the given workflow. A20-Mini 32-bit float / 48 kHz monophonic WAV and RF64 WAV files can be renamed, snipped by timecode values, converted to 24-bit, conformed to a CSV Sound Report, and more.

Separately available accessories for the A20-Mini include the PowerStation-8M (allows battery charging, file transfer, and timecode jamming of up to eight A20-Minis at a time), two timecode cables (LEMO 5-pin to USB Type-C or BNC to USB Type-C), and rubber caps for the USB Type-C port.

• Full remote control of the Mini via A20-Remote companion app
• Control frequency and RF power, turn the Mini on and off, start and stop recording, mute the microphone, format the media, view the status of all your Minis, and more from the app
• GainForward Architecture lets you set the Mini’s gain levels via trim control (with an 8-Series mixer) or at the A10-RX receiver
• Full 10 Hz to 20 kHz audio bandwidth and 130 dBA dynamic range
• 100% digital RF modulation and transmission
• Same excellent range and audio quality as the A10-TX
• Full SpectraBand 470 to 1525 MHz, tunable in 25 kHz steps
• Integrated 32-bit float / 48 kHz recorder with 64GB storage for over 80 hours of record time
• Offload recorded WAV files via USB Type-C and optionally conform/convert with SD-Utility
• Powering via three AAA batteries or NP-BX1 (both available separately) with built-in charging for an NP-BX1 Li-ion battery
• Internal supercapacitor-powered timecode generator with 0.2 ppm accuracy can be jammed via USB Type-C with negligible drift over a 24-hour period
• LEMO 3-pin lavalier microphone input with 5V bias power
• Extensive gasketing and waterproof connectors to withstand water and sweat

Related Questions and Answers

Q: 1. Can this be bound to EW-DX receivers?

A: Yes, the Sennheiser EW-DP SKP Digital Plug-On Wireless Transmitter/Recorder can be paired with [Sennheiser EW-DX wireless receivers that operate within the same frequency band.

Q: 2. Does this item come with a manufacturer's ( Sound Devices) warranty?

A: Yes, the Sound Devices A20-RX comes with a limited 1-year manufacturer's warranty with the option of an additional 1-year extension upon product registration.

Q: 3. 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: 4. What is the max microphone SPL for this recorder?

A: The Sennheiser EW-DP SKP Digital Plug-On Wireless Transmitter/Recorder (Q1-6: 470 to 526 MHz), B&H # SE700080, is not rated for SPL; it works with just about any handheld or shotgun microphone.

Q: 5. Can this product be tuned to 806-809 MHz for use when traveling to Japan?

A: Yes.

Q: 6. Can multiple transmitters be paired with a single receiver? Similar to the Sony UWP system.

A: No, the EW-DP EK receiver is single-channel only and only one transmitter can be connected at one time.

Q: 7. 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: 8. Is it possible to use this only as a recording device, and just have TC and rec Start/Stop over bluetooth?

A: Yes, the Audio Ltd. A10-TX-US Wireless Transmitter and Recorder can be used as a standalone recording device, without transmitting a wireless audio signal to a receiver.

Q: 9. does the transmitter allow for timecode input?

A: No, the Sennheiser EW-DP SKP Digital Plug-On Wireless Transmitter/Recorder does not allow for timecode input.

Q: 10. Is this digital Wireless Transmitter compatible with the Sennheiser analogue system with the same frequency bandwidth?

A: The Sennheiser EW-DP SKP Digital Plug-On Wireless Transmitter/Recorder is not compatible with older analog models of Sennheiser wireless receivers.