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8X8 Analog Audio Matrix Preamp with DSP

ITEM: ADX-0808



  • 8x8 audio matrix
  • Per zone volume control, tone, and balance controls
  • Per zone 10-band EQ, low-pass / high-pass filters
  • Add a sub to any zone 2.1 channel groups
  • Ethernet, RS-232, IR, and front panel controls
  • Compatible with Control4, URC, RTI and more
  • Designed and built in Lexington, Kentucky, USA

ZQ: With Audio Authoritys exclusive
ZQ 10-Band Zone Equalization


The ADX-0808 is the cornerstone of a quality distributed audio system. Loaded with features like onboard volume control, 2.1 low-pass filter, a 10-band equalizer, tone and balance controls, the ADX-0808 mates up with any zone amplifier and control system to deliver high fidelity audio to up to 8 independent stereo zones. New discrete commands are provided in the revised ADX manual, available for download below.
  • Supports eight sources and eight zones (Model ADX-1616 supports 16 sources and 16 zones)
  • Ethernet, RS-232, IR, and front panel control options
  • Digital volume control, 10-band equalizer, tone, and balance controls for each output zone
  • Low-pass filter and zone grouping feature designed for adding a sub in each audio zone
  • Single-cable audio connection (DB25) to soon-coming Audio Authority amplifiers
  • PC utility is a free download that allows quck setup using a Windows PC via RS-232 connection, or remotely via USB drive
  • Rack mountable with included 2U rack-mount ears
  • Designed and Built in Lexington, Kentucky USA

Key Features

  • 8x8 matrix switcher (also available ADX-1616)
  • Integrates seamlessly with third party control systems from Control4, URC, RTI and more
  • IR and RS-232 codes available for use with virtually any third party control system
  • Zone grouping (10 groups) and Source/Zone combination presets (10 source/zone combinations)
  • Global source selection (all zones on to same source)
  • Front panel lockout
  • Simple setup using our PC utility via serial, Ethernet or USB drive
  • 2U rack mount ears included

DSP Features Per Zone

  • ZQ™ 10-band Equalization
  • Low-pass and high-pass Butterworth filters
  • Basic tone controls (bass/treble) and balance
  • Low-pass filter and 2.1 zone grouping feature designed for adding a sub in each audio zone


  • Stereo analog audio - 8/8 (RCA)

Control Interfaces

  • Ethernet (download our free iPad app template for Command Fusion)
  • RS-232 two-way serial (Control4 and RTI drivers available)
  • Front panel IR sensor
  • Rear panel IR input (3.5 mm jack or 3-pin header)
  • Full front panel control with capacitive touch surface and simple rotating multi-function knob

See hotel, restaurant, and home application drawings featuring the new SonaFlex 16-channel amplifier and the ADX (download PDF).

8x8 Multi-Zone Audio Matrix Switcher with DSP
Model ADX-0808

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Audio Parameters
  • Input Impedance: 100K
  • Min Load Impedance: 10K
  • Multi-channel Digital: No
  • Frequency Response: 10-25kHz
  • S/N Ratio: 82dB
  • THD+Noise: 0.02%
  • Crosstalk: -85dB
  • Connector Types (Input): RCA
  • Connector Types (Output): RCA
  • Product Dimensions:3.5 x 16.5 x 8.25 (H-W-D, inches)
  • Net Product Weight: 9.9
  • Shipping Weight: 11.4
  • Agency Approvals: FCC
  • DC Input Connector: 5.5 x 2.1mm
  • DC Input Voltage/Polarity: 18V center positive
  • Max DC Input Current: 600mA/1.1A
  • Heat Output:38/68 BTU/hr

In the Box

  • Power Supply: Model 803-170
  • Rack Mount Ears: Model 1192A
  • User Manual

Frequently Asked Questions

Q: What is the DB25 connector for on the rear panel of the ADX?
In the near future, Audio Authority will introduce the SonaFlex multi-zone amplifier that has a DB25 connector as an alternate input method.

Q: What is the process to create a 2.1 zone group?
In brief, you first apply the lowpass filter to a zone, which also produces a mono signal on both channels of the zone. Then you group the lowpass zone with a full range zone, so that group commands (e.g. volume, mute, and switching) effect both outputs. 

Q: Can I use both of the mono outputs in a lowpass zone?
Yes. Both low level zone outputs may be connected to separate powered subwoofers, or to two separate amplifiers driving passive subs.

Q: Why don't changes to an EQ preset take effect immediately?
Select another preset in the zone and then return to the changed preset. EQ presets are not designed to be adjusted on the fly (use ZQ for real time EQ settings).


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