Audio specialist Sound Devices has unveiled the A20-Mini digital wireless microphone transmitter along with its companion A20-Remote app for professional applications. The A20-Mini is Sound Devices& first miniature transmitter and includes features such as full remote control via the A20-Remote app, GainForward architecture, internal 32-bit float recording, and a freely adjustable transmission range of 470 MHz - 694 MHz.
Simultaneously with the radio transmission, the recorded sound can also be recorded in the A20. The A20-Mini&s 64 GB of internal memory allows over 80 hours of recording in 48 kHz, 32-bit float. Recorded WAV files can be transferred to a computer via the A20-Mini&s USB-C port and optionally converted to standard 24-bit files using SD Utility, the free companion app for Mac and Windows.
Both recordings and RF transfer have excellent fidelity with a full audio bandwidth of 10 Hz-20 kHz - recordings are synchronized at 0.2 ppm by the extremely accurate internal timecode generator. The A20-Mini can be jammed via USB-C with minimal drift over a 24-hour period. Unlike, say, RØDE&s Wireless Go II system, the A20-Mini transmitter does not use an integrated microphone, but instead uses an external lavalier mic via 3-pin LEMO.
The waterproof A20 mini transmitter is controlled via Bluetooth using the A20 Remote app (iOS, iPadOS and Android), which allows you to control the RF transmit frequency and power, turn the A20 mini on and off, start and stop recording, mute the microphone, format the media and much more.
A special feature of the 51g lightweight (without batteries) A20-Mini is the GainForward architecture that allows gain, limiter and low-cut to be adjusted directly from a Sound Devices 8-series portable mixer/recorder such as the 833 or 888. Users with other mixer/recorders can also adjust gain, limiter and low-cut locally via menus on the A10-RX.
The A20-Mini is powered by three AAA batteries or a rechargeable Sony NP-BX1 battery - adapters are not required. Integrated charging of the NP-BX1 is possible via the USB-C port. With the optional PowerStation-8M accessory, up to eight A20-Minis can be charged, files transferred and timecode jammed simultaneously. The A20-Mini expands Sound Devices family of wireless solutions, the A10 Digital Wireless System, consisting of A10-TX, A10-RX and A10-RACK, which was released in 2018 after Sound Devices acquired well-known British wireless audio manufacturer Audio Limited.