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Adastra A4 Dual Stereo PA Amplifier 4 x 200W

Code: 953.404UK
  • £199.00
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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 supply230Vac, 50Hz (IEC)

FuseF5A, 250V

Output power rms @ 4 Ohms4 x 200W

Output power rms @ 8 Ohms4 x 100W

Amplifier : constructionClass D

Frequency response20Hz - 20kHz ±0.5dB

Microphone inputs2 x 6.3mm jack (mono)

Line inputsLine 1: L+R (6.3mm jack/RCA), Line 2: L+R (RCA)

Input sensitivity : line0.775Vrms

Auxiliary input3.5mm stereo jack

Input sensitivity : aux0.480Vrms

Input impedance20k Ohms (balanced), 10k Ohms (unbalanced)

Audio sourceUSB/SD mp3 playback, FM tuner, BT receiver

Bluetooth version2.3

Input controlsAux, Media, Line1, Line2, Mic1, Mic2, Talkover

Line output4 x RCA

Speaker outputs4mm binding posts (4 channels)

Antenna connectionF type (FM tuner)

Output controls2 x source select, 2 xBass, 2 xTreble, Ch1, Ch2, Ch3, Ch4

Dynamic range92dB

THD +N<0.1%

ProtectionThermal, over-current, over-voltage, short-circuit

Dimensions482 x 240 x 88mm


This product has not been reviewed yet.