SOUND DEVICES A20-RX

Sound Devices A20-RX (Astral ARX2) — 2-Channel True-Diversity Digital SpectraBand Receiver

The A20-RX two-channel true-diversity receiver delivers a tuning range of 470-1525 MHz in a single unit (extended to 169-1525 MHz with newer Astral ARX2 firmware). With proprietary SpectraBand technology, brick-wall SAW filtering, AutoAssign frequency scanning, and full GainForward support, the A20-RX is the centerpiece of the Astral wireless ecosystem.

Compatible with one or two A10-TX, A20-TX, or A20-Mini transmitters.

Key Features

• 4 complete digital receiver circuits (2 per channel) via Digital True Diversity topology — industry-leading reception
• SpectraBand technology: 470-1525 MHz tuning range, almost 2,600 channels worldwide — nearly double of competing systems
• Brick-wall SAW filters: eliminate out-of-band interference for excellent RF performance in noisy environments (DTV, IFB, camera hops)
• AutoAssign: scans a tuning band and selects available frequencies automatically — perfect for fast-paced shoots
• 100% digital RF modulation, Standard or Long Range, no compression or distortion
• Full 10 Hz to 20 kHz audio bandwidth
• 2 ms latency (Standard) — the lowest in digital RF
• GainForward Architecture: adjust A20-Mini gain via trim control (with 8-Series) or directly on the A20-RX (other mixers)
• 5 modular adapters for maximum connectivity: SuperSlot (A-SL), XLR (A-XLR), TA3 (A-TA3), A-RXMON headphone amp, A-15PIN two-channel AES Sony camera slot adapter
• SuperSlot compatible with SL-2, 8-Series mixer-recorders, and A10-Rack
• Adjustable OLED display with 3-button navigation
• 4-digit user-configurable PIN for privacy

Output Adapter Options

• Standalone — receiver only, no output adapter (add adapter later as needed)
• A-TA3 — panel-mount TA3 audio outs (analog or AES), 4-pin Hirose or TA4 DC power in, USB-C for firmware
• A-SL (SuperSlot) — 25-pin D-Type Uni/SuperSlot adapter for use with SL-2, 8-Series, A10-Rack. Includes A-PLATE
• A-XLR — cable-mount XLR audio outs (analog or AES), 4-pin Hirose male and female DC power in, micro-USB for firmware

Specifications

• RF tuning: 470-1525 MHz, SpectraBand technology, transmitters tunable in 25 kHz steps
• Modulation: Proprietary digital RF, Standard or Long Range, menu-selectable
• Latency: Standard 2 ms / Long Range 3.9 ms (measured at analog output)
• Audio frequency response: 10 Hz - 20 kHz
• Max output level: +14 / +2 / -10 / -22 dBu menu-selectable, 130 ohm output impedance, with 0 dBFS at TX input
• Digital audio output: Balanced AES3, 110 ohm output impedance (Left = ch 1, Right = ch 2)
• Menu/controls: OLED menu display, 3-button navigation
• Privacy: User-configurable 4-digit PIN
• Power: 6-18 VDC
• Operating temp: -10°C to +55°C
• Weight: 165 g (without rear adapter)
• Dimensions (H × W × D): 113.7 × 78.5 × 26.6 mm (without rear adapter)

What's in the box: A20-RX receiver, A-SMAR antenna, A-SMA antenna (output adapter included with non-standalone variants).

2-year warranty when registered at sounddevices.com.