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Adastra A Series multi-zone mixer amplifiers


Adastra A Series digital 3 or 6 zone amplifiers




A-series Multi Zone Stereo Amplifiers

Multi-zone amplifiers with 2 microphone inputs and a switchable stereo input for each zone. An inbuilt media player section offers playback of mp3 audio tracks from USB drive or SD card and also has a B/T wireless receiver and FM radio tuner. A rotary switch for each output zone selects the stereo playback audio from a choice of 2 rear stereo inputs, a front 3.5mm stereo input or the built-in media player. Mic inputs 1 and 2 are live to all output zones at all times. Speakers are connected from the rear panel Euroblock terminals to deliver up to 200W per output at 4 Ohms. Designed for installations requiring high quality stereo sound in multiple rooms or listening areas

  • Media player with USB/SD playback
  • FM radio tuner with external aerial connection
  • Bluetooth receiver
  • Power supply: 230Vac, 50Hz (IEC)
  • Fuse: F5A, 250V
  • Amplifier : construction: Class D
  • Frequency response: 20Hz – 20kHz ±0.5dB
  • Microphone inputs: 2 x 6.3mm jack (mono)
  • Line inputs: Line 1: L+R (6.3mm jack/RCA), Line 2: L+R (RCA)
  • Input sensitivity : line: 0.775Vrms
  • Auxiliary input: 3.5mm stereo jack
  • Input sensitivity : aux: 0.480Vrms
  • Input impedance: 20k Ohms (balanced), 10k Ohms (unbalanced)
  • Audio source: USB/SD mp3 playback, FM tuner, BT receiver
  • Input controls: Aux, Media, Line1, Line2, Mic1, Mic2, Talkover
  • Antenna connection: F type (FM tuner)
  • Dynamic range: 92dB
  • THD +N: <0.1%
  • Protection: Thermal, over-current, over-voltage, short-circuit
  • Dimensions: 482 x 240 x 88mm


  • Output power rms @ 4 Ohms: 6 x 200W
  • Output power rms @ 8 Ohms: 6 x 100W
  • Line output: 6 x RCA
  • Speaker outputs: 4mm binding posts (6 channels)
  • Output controls: 3 x Source select, Ch1, Ch2, Ch3, Ch4, Ch5, Ch6
  • Weight: 8.26kg


  • Output power rms @ 4 Ohms: 8 x 200W
  • Output power rms @ 8 Ohms: 8 x 100W
  • Line output: 8 x RCA
  • Speaker outputs: 4mm binding posts (8 channels)
  • Output controls: 4 x source select, Ch1, Ch2, Ch3, Ch4, Ch5, Ch6, Ch7, Ch8
  • Weight: 8.96kg



Founded in 1949, Adastra has earned a reputation for delivering high quality public address systems.

Adastra strives to provide complete and versatile solutions for commercial installations, with specialist products provided for zoning, noise pollution control, portable public address and induction loop systems. A comprehensive range of associated products are also available, including speaker brackets, rack cabinets and microphones. These products have been created with the user in mind, offering a flexible and modular approach to installation sound systems. For over 60 years it has serviced the needs of the public address sector as a fully established brand name, celebrated for quality and excellence, and will continue to develop and diversify its range in order to remain at the forefront of the industry.

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Additional information

Dimensions24 × 48.2 × 8.8 cm
Output (RMS)

600w, 800w


6, 8

Media Playback

Bluetooth, FM Radio, SD Card Slot, USB Slot


6.3mm Jack, RCA Phono, Screw Terminals






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