Sound Devices Astral A20-HH Digital Wireless Handheld Microphone with CD1 Capsule, Black

SKU: SDA20HH MFR: A20-HH
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Key Features

  • Experience pristine audio with this digital wireless handheld microphone system.
  • Achieve low latency with selectable modes, perfect for live sound or studio recording.
  • Enjoy a reliable connection across a wide 470-1525 MHz frequency range for seamless audio.
  • Get approximately 10 hours of battery runtime at 10 mW RF output power.
  • Easy setup with included accessories; be recording or broadcasting in minutes!
  • Boasting good range via NexLink, control the A20-HH remotely with ease.
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Special Order?Estimated to Ship: 08/24/2025
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Sound Devices A20-HH Specifications

A20-HH Microphone

A20-HH Microphone

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  • Color

    Black

  • Frequency Range

    470 to 1525 MHz
    Transmitter tunable in 25 kHz steps
    Available frequencies are dependent on region

  • RF Output Power

    Off, 2 mW, 10 mW, 20 mW, 40 mW, 100 mW

  • Modulation Mode

    Proprietary, 100% digital RF modulation
    Standard, Long Range, T&M, selectable

  • Latency

    Standard (2 ms)
    Long Range (3.9 ms)
    T&M (7 ms) (Mic capsule to Receiver analog output)

  • Antennas

    RF: 470-1525 MHz : Built-in
    NexLink 2.4 GHz: Built-in

  • Audio Frequency Response

    10 Hz - 20 kHz, +/- 1 dB re 1 kHz

  • Audio Input (Mic capsule)

    Compatible with Sound Devices CD1, Shure-style, or Sennheiser-style mic capsule
    Bias power with Shure-style: 5V
    Bias power with Sennheiser-style: 10V
    EIN: -128 dBV (A-weighting)
    Dynamic range: >140 dB

  • Counterweight

    Internal counterweight available to balance out heavy microphone capsules

  • Menu and Controls

    e-Paper screen highly visible in direct sunlight
    e-Paper screen holds display image without battery power
    Power button and three navigation buttons protected inside battery compartment

  • Control Rings

    4 types available:
    Control 0, supplied with A20-HH, no buttons
    Control 1, optional, one push button
    Control 3, optional, three push buttons
    Control Switch, optional, one slide switch

    User changeable

  • Remote Control

    A20-Remote Android, iOS, and iPad app via Bluetooth 5.2 LE
    Astral Receivers via super-long-range NexLink

  • Recording Media

    Micro SD Card
    Media format: ExFAT for Micro SD cards 64GB or more, FAT32 for Micro SD cards 32GB or less
    Selectable Record Only Mode or RF Only Mode. Recording is not possible when transmitting audio

  • Recording File Format

    32 Bit Float, 48 kHz, Monophonic wav
    Broadcast WAV (<4 GB), RF64 WAV (>4 GB)

  • Timecode

    Sync wirelessly over NexLink (from an Astral Receiver)
    0.2 ppm accuracy
    Holds accurate clock for four hours while powered down with batteries inserted, holds for one hour without batteries via internal supercapacitor
    Auto Jams timecode via USB-C connector or wirelessly via NexLink

  • Timecode Frame Rates

    23.98, 24, 25, 29.97 DF, 29.97 ND, 30 DF, 30 ND
    Frame rates are auto-detected from incoming source

  • USB-C

    Mass Storage (USB-C): USB 2.0 high speed for file transfer of internal microSD card recordings
    Charges XL-B18650 Li-ion battery inserted in A20-HH
    Pairing to Astral Receivers

  • Powering

    Sound Devices XL-B18650 Li-Ion battery

  • Battery Charging

    Built-in charging of battery via USB-C
    Inductive charger dock for A20-HH
    Battery can be removed and charged in any standard 18650 battery charger

  • Battery Runtime

    Approx 10 hours at 10 mW RF output power
    Unit can be completely powered off remotely via app or via NexLink to extend battery runtime

  • Battery Info

    Required, included

  • Battery Material

    Lithium ion

  • Battery Type

    18650

  • Battery Quantity

    2

  • Environmental

    Operating: 14 to 104 Degree F (-10 to 40 Degree C)
    Storage: -40 to 185 Degree F (-40 to 85 Degree C)
    Water resistant

  • Dimensions (H x W x D)

    No mic head: 7.1 x 1.5 x 1.5" (18 x 3.7 x 3.7cm)
    With mic head: 9.6 x 2 x 2" (24.5 x 5.1 x 5.1cm)

  • Weight

    No battery or optional counterweight: 6.3 oz (178g)
    With battery: 8.1 oz (226g)
    Counterweight: 1.1 oz (30g)

CD1 Capsule

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  • Type

    Dynamic mic, moving coil
    Dual diaphragm, dual voice coil
    100% swept and calibrated at factory

  • Polar pattern

    Cardioid

  • Frequency response

    50 - 15,000 Hz

  • Output Impedance

    600 ohms

  • Sensitivity

    -54 dBV/Pa

  • Max Acoustic Level

    >140 dB SPL

  • UPC Code

    850032705400

About Sound Devices A20-HH

Become the star of the show with the Astral A20-HH Digital Wireless Handheld Microphone, featuring the innovative CD1 Capsule. This black, state-of-the-art microphone is engineered for superior sound quality and performance, making it the ideal choice for concerts, live events, theater productions, houses of worship, corporate events, and more. The A20-HH microphone stands out with its unparalleled ability to tune into a wider spectrum of frequencies than any other handheld microphone, ensuring you always find open frequencies, whether you're performing in a packed house on opening night or on a long tour across the globe.

Designed for quick and easy setup, the A20-HH saves valuable time with its fast frequency scanning and automatic setting capabilities, thanks to the integrated SpectraBand technology. This feature offers an impressive tuning range from 470 MHz to 1525 MHz, allowing seamless operation in any location. The AutoAssign function further simplifies the process, enabling automatic frequency assignment with just one button press.

At the heart of the A20-HH is the patent-pending CD1 Mic Capsule, crafted by Sound Devices, renowned for their impeccable audio quality. This unique capsule is the only calibrated dynamic capsule globally, ensuring consistent, smooth vocal reproduction across all units. For added versatility, the A20-HH can accommodate any manufacturer's mic capsule with built-in Shure- or Sennheiser-style threads, eliminating the need for adapters.

Customization is a breeze with the A20-HH's quick-change Body Shell, Control Ring, Capsule Collar, and CD1 components. These elements can be decorated, painted, or bedazzled to match any aesthetic, providing a personalized touch for any performance. For those seeking a standout look, Rebel Trading Company offers custom paint finishes and crystal embellishments, including designs, artwork, names, and logos.

The A20-HH's rugged construction, featuring solid magnesium die-casting, stainless steel, and an impact-absorbing polycarbonate outer shell, ensures it can withstand the rigors of touring. Sound Devices' rigorous quality assurance testing guarantees durability, subjecting the microphone to extreme conditions such as dropping, cold, heat, humidity, and more.

Equipped with the patent-pending RocketAntenna, the A20-HH maintains consistent RF transmission levels, preventing dropouts regardless of how the microphone is held. The built-in NexLink protocol provides ultra long-range remote control, allowing you to change frequencies and power settings from your mixing console with ease. Additionally, GainForward technology enables gain adjustments directly at the console, eliminating the need for on-device gain controls and preserving headroom and noise performance.

Experience the ultimate in wireless microphone technology with the Astral A20-HH, designed to deliver exceptional sound quality and reliability for any performer.

Sound Devices A20-HH Features

  • Worldwide tuning range: 470 MHz-1525 MHz
  • State-of-the-art 100% digital modulation delivers the longest transmission distance of any system on the market
  • Patented wideband RocketAntenna design not affected by anywhere grip
  • Reversible A20-HH Capsule Collar enables changing between Shure or Sennheiser capsule threads, allowing the use of capsules with these threads; no adapters needed
  • CD1 high-precision, fully-calibrated dynamic mic capsule for incredible mic-to-mic consistency
  • 10 hours (10mW) runtime from standard 18650 Li-Ion battery

Warranty Information

This product has a limited warranty of 12 months.

Key Features

  • Experience pristine audio with this digital wireless handheld microphone system.
  • Achieve low latency with selectable modes, perfect for live sound or studio recording.
  • Enjoy a reliable connection across a wide 470-1525 MHz frequency range for seamless audio.
  • Get approximately 10 hours of battery runtime at 10 mW RF output power.
  • Easy setup with included accessories; be recording or broadcasting in minutes!
  • Boasting good range via NexLink, control the A20-HH remotely with ease.

What's in the box:

  • Sound Devices Astral A20-HH Digital Wireless Handheld Microphone (Black)
  • CD1 Cardioid Mic Capsule
  • Control 0 Ring
  • Reversible Capsule Collar
  • Counterweight-30
  • 2x XL-B18650 Li-Ion Battery with Small Soft Case
  • Mic Clip
  • Threaded Adapter
  • USB-A to C Cable (1m)
  • Pouch
  • Sound Devices 1 Year Limited Warranty