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Adastra A4 Dual Zone 200W Stereo Amplifier with FM Radio/Bluetooth & Media Player

by Adastra
Original price £199.00
Original price £199.00 - Original price £199.00
Original price £199.00
Current price £122.50
£122.50 - £122.50
Current price £122.50
SKU 953.404UK

Fully featured PA amplifier with 2 independent stereo zone outputs and mixer section for 2 microphones and a stereo audio source.

An inbuilt media player section offers playback of MP3 audio tracks from USB drive or SD card and also has a Bluetooth 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 both output zones at all times. 2 pairs of speaker connections on the rear panel are via 4mm binding posts, which can drive up to 2 x 8 Ohm speakers on each of the 4 channels to deliver up to 4 x 200W.

Designed to offer installers a comprehensive dual zone PA for bars, restaurants and function rooms.


  • Independent stereo playback to 2 separate zones

  • Media player with USB/SD playback

  • FM radio tuner with external aerial connection

  • Bluetooth receiver


  • Power supply 230Vac, 50Hz (IEC)

  • Fuse F5A, 250V

  • Output power rms @ 4 Ohms4 x 200W

  • Output power rms @ 8 Ohms4 x 100W

  • Amplifier : construction Class D

  • Frequency response 20Hz - 20kHz ±0.5dB

  • Microphone inputs 2 x 6.3mm jack (mono)

  • Line inputsLine 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 : aux0.480Vrms

  • Input impedance 20k Ohms (balanced), 10k Ohms (unbalanced)

  • Audio source USB/SD mp3 playback, FM tuner, BT receiver

  • Bluetooth version 2.3

  • Input controls Aux, Media, Line1, Line2, Mic1, Mic2, Talkover

  • Line output4 x RCA

  • Speaker outputs 4mm binding posts (4 channels)

  • Antenna connection F type (FM tuner)

  • Output controls 2 x source select, 2 xBass, 2 xTreble, Ch1, Ch2, Ch3, Ch4

  • Dynamic range 92dB

  • THD +N<0.1%

  • Protection Thermal, over-current, over-voltage, short-circuit

  • Dimensions 482 x 240 x 88mm

  • Weight 5.98kg