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

by Adastra
SKU 953.404UK
RRP Price £199.00
RRP Price £199.00 - RRP Price £199.00
RRP Price £199.00
Trade Price £122.50
£122.50 - £122.50
Trade Price £122.50
ex. VAT (Calculated At Checkout)

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

Our aim is to get your product to you as soon as possible from your order.

We do however strongly suggest that you order in good time before you need the item(s) to ensure safe delivery.


All orders are shipped via next working day courier using a combination of DPD & ParcelForce.

Next Working Day = £6.99 + VAT

Orders Over £250 + VAT = £FREE

Saturday Delivery = Call Us To Book & Confirm Costs.


We hold good stock of the majority of our goods however some items are ordered in as and when required.

If you need an item urgently please call us on 02392 006118 to first confirm lead time. 

Our aim is to keep stock so you don't have to and we'll always endeavour to get your product to you ASAP.


All orders received before 2pm will be processed for next working day delivery. Orders received after 2pm will be processed and dispatched the following working day.