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Adastra A8 Quad-Zone Class D Stereo Amplifier 8x200W

£39999
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Description

The Adastra A8 is a multi-zone stereo amplifier built for installations that need good stereo sound across several rooms or listening areas. It delivers four independent stereo outputs, each rated up to 200W per channel at 4 Ohms, so you can run different audio in different zones from a single unit. Speakers connect through the rear panel Euroblock terminals, and a rotary switch on each zone selects the audio from two rear stereo inputs, a front 3.5mm stereo input or the built-in media player.

Source options are wide. The inbuilt media player handles mp3 playback from a USB drive or SD card, and there's a B/T wireless receiver and an FM radio tuner with an external aerial (antenna) connection via an F type socket. Two microphone inputs on 6.3mm jacks stay live to all output zones at all times, which suits paging or announcements alongside background music. A talkover control lets a mic take priority over the playing audio when needed.

The amplifier uses Class D construction with a frequency response of 20Hz to 20kHz (±0.5dB), a dynamic range of 92dB and THD+N below 0.1%. Protection covers thermal, over-current, over-voltage and short-circuit conditions. It runs from a 230Vac 50Hz IEC supply with an F5A fuse and measures 482 x 300 x 88mm, so it fits a standard 19-inch rack. The A8 is also available with three independent stereo outputs if you need fewer zones.

Specification
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, B/T receiver
B/T wireless version 2.3
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 482mm x 300mm x 88mm
Downloads

Product Manual

Frequently Asked

How many zones does the A8 support?

The A8 provides four independent stereo outputs, so you can run four separate zones. A three-zone version is also available if you need fewer outputs.

What power does it deliver?

Each output delivers up to 200W per channel at 4 Ohms, giving 8 x 200W in total across the four stereo zones.

What audio sources can I use?

You can select from two rear stereo inputs, a front 3.5mm stereo input, or the built-in media player. The media player handles USB and SD mp3 playback, a B/T wireless receiver and an FM tuner.

How do microphone inputs work across zones?

There are two microphone inputs on 6.3mm jacks. Both stay live to all output zones at all times, and a talkover control lets a mic take priority over the playing audio.

How do I connect speakers?

Speakers connect through the rear panel Euroblock terminals. The FM tuner uses an F type aerial (antenna) connection.

Will it fit a standard rack?

Yes. It measures 482 x 300 x 88mm, so it fits a standard 19-inch rack, and runs from a 230Vac 50Hz IEC mains supply.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.

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    Description

    The Adastra A8 is a multi-zone stereo amplifier built for installations that need good stereo sound across several rooms or listening areas. It delivers four independent stereo outputs, each rated up to 200W per channel at 4 Ohms, so you can run different audio in different zones from a single unit. Speakers connect through the rear panel Euroblock terminals, and a rotary switch on each zone selects the audio from two rear stereo inputs, a front 3.5mm stereo input or the built-in media player.

    Source options are wide. The inbuilt media player handles mp3 playback from a USB drive or SD card, and there's a B/T wireless receiver and an FM radio tuner with an external aerial (antenna) connection via an F type socket. Two microphone inputs on 6.3mm jacks stay live to all output zones at all times, which suits paging or announcements alongside background music. A talkover control lets a mic take priority over the playing audio when needed.

    The amplifier uses Class D construction with a frequency response of 20Hz to 20kHz (±0.5dB), a dynamic range of 92dB and THD+N below 0.1%. Protection covers thermal, over-current, over-voltage and short-circuit conditions. It runs from a 230Vac 50Hz IEC supply with an F5A fuse and measures 482 x 300 x 88mm, so it fits a standard 19-inch rack. The A8 is also available with three independent stereo outputs if you need fewer zones.

    Specification
    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, B/T receiver
    B/T wireless version 2.3
    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 482mm x 300mm x 88mm
    Downloads

    Product Manual

    Frequently Asked

    How many zones does the A8 support?

    The A8 provides four independent stereo outputs, so you can run four separate zones. A three-zone version is also available if you need fewer outputs.

    What power does it deliver?

    Each output delivers up to 200W per channel at 4 Ohms, giving 8 x 200W in total across the four stereo zones.

    What audio sources can I use?

    You can select from two rear stereo inputs, a front 3.5mm stereo input, or the built-in media player. The media player handles USB and SD mp3 playback, a B/T wireless receiver and an FM tuner.

    How do microphone inputs work across zones?

    There are two microphone inputs on 6.3mm jacks. Both stay live to all output zones at all times, and a talkover control lets a mic take priority over the playing audio.

    How do I connect speakers?

    Speakers connect through the rear panel Euroblock terminals. The FM tuner uses an F type aerial (antenna) connection.

    Will it fit a standard rack?

    Yes. It measures 482 x 300 x 88mm, so it fits a standard 19-inch rack, and runs from a 230Vac 50Hz IEC mains supply.

    Shipping & Returns

    Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

    Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

    To arrange a return, call us on 020 8149 5199 or use our contact page.