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Adastra RM406 100V 6-Zone Mixer Amplifier with USB/SD/FM/BT

£59999
The RRP is the manufacturer's recommended retail price of the item.
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Description

The Adastra RM406 is a zone mixer-amplifier built for multi-room audio, with a 6 x 40W RMS Class D power section that runs on 100V lines or 4/8 Ohm speakers. Each of the six output zones works independently, so you can send different sources to different areas at the same time. Transformer outputs sit alongside the Class D amplification, giving you flexibility across both distributed and low-impedance speaker setups.

Source options cover most needs without extra kit. There are three mic/line inputs on combined XLR/jack connectors, one auxiliary input on stereo RCA (phono), and a built-in USB/SD/FM player with a Bluetooth 5.0 receiver. Any of these can be matrix switched to any zone, so each room gets its own choice of audio. Microphone 1 has a variable override, and each mic input offers switchable +20V phantom power for condenser microphones. A master chime with its own volume control handles paging calls and alerts, and mic priority ducks the music when someone speaks.

Setup and monitoring are handled from the front panel. A 6.3mm stereo headphone output with volume control lets you check any zone before it goes live, and there are matching RCA line monitor outputs. Each zone provides both line-level RCA and 100V/8/4 Ohm speaker terminals. Mute is triggered by +24V relay contacts for emergency or external control. The unit measures 433 x 89 x 302mm (2U rack), weighs 11kg, and runs from a mains supply of 170-264Vac at 50Hz via an IEC connector.

Specification
Power supply 170-264Vac, 50Hz (IEC)
Power output 6 x 40W rms
Audio source USB/SD/FM/BT audio player
Amplifier : construction Class D + transformer outputs
Inputs 3 x mic/line (XLR/jack), auxiliary 2 x RCA
Zone outputs: line 6 x RCA (mono)
Zone outputs: speaker 6 x terminal outputs 100V / 8 Ohms / 4 Ohms / Com
Phantom power +20V switchable to each XLR
Monitor outputs 6.3mm stereo phones, 2 x RCA line
Mute +24V relay contacts
THD <0.76% @ 1kHz
Input impedance 1k Ohms (mic/line)
Input sensitivity -11dB (line), -46dB (mic)
SNR 84dB (line), 82dB (mic)
Bluetooth version 5.0
Frequency response 100Hz - 24kHz
Dimensions 433mm x 89mm x 302mm
Weight 11.00KG
Downloads

Product Manual

Frequently Asked

How many zones can the RM406 drive independently?

It has six independent output zones, and any input source can be matrix switched to any zone, so each area can play a different source at the same time.

Can I use it with both 100V line and low-impedance speakers?

Yes. The speaker terminals support 100V line, 8 Ohm, 4 Ohm and Com connections, so it works with distributed 100V systems and standard low-impedance speakers.

What audio sources are built in?

There is an integral USB/SD/FM player plus a Bluetooth 5.0 receiver, alongside three mic/line inputs and one auxiliary RCA input.

Does it support paging and announcements?

Yes. Mic 1 has a variable override, all mic inputs have mic priority, and a master chime with volume control is provided for paging calls and alerts.

Do the microphone inputs supply phantom power?

Each XLR mic input has switchable +20V phantom power, so you can use condenser microphones that require it.

How much rack space does it need?

The RM406 measures 433 x 89 x 302mm, which is a 2U rack size, and weighs 11kg.

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 RM406 is a zone mixer-amplifier built for multi-room audio, with a 6 x 40W RMS Class D power section that runs on 100V lines or 4/8 Ohm speakers. Each of the six output zones works independently, so you can send different sources to different areas at the same time. Transformer outputs sit alongside the Class D amplification, giving you flexibility across both distributed and low-impedance speaker setups.

    Source options cover most needs without extra kit. There are three mic/line inputs on combined XLR/jack connectors, one auxiliary input on stereo RCA (phono), and a built-in USB/SD/FM player with a Bluetooth 5.0 receiver. Any of these can be matrix switched to any zone, so each room gets its own choice of audio. Microphone 1 has a variable override, and each mic input offers switchable +20V phantom power for condenser microphones. A master chime with its own volume control handles paging calls and alerts, and mic priority ducks the music when someone speaks.

    Setup and monitoring are handled from the front panel. A 6.3mm stereo headphone output with volume control lets you check any zone before it goes live, and there are matching RCA line monitor outputs. Each zone provides both line-level RCA and 100V/8/4 Ohm speaker terminals. Mute is triggered by +24V relay contacts for emergency or external control. The unit measures 433 x 89 x 302mm (2U rack), weighs 11kg, and runs from a mains supply of 170-264Vac at 50Hz via an IEC connector.

    Specification
    Power supply 170-264Vac, 50Hz (IEC)
    Power output 6 x 40W rms
    Audio source USB/SD/FM/BT audio player
    Amplifier : construction Class D + transformer outputs
    Inputs 3 x mic/line (XLR/jack), auxiliary 2 x RCA
    Zone outputs: line 6 x RCA (mono)
    Zone outputs: speaker 6 x terminal outputs 100V / 8 Ohms / 4 Ohms / Com
    Phantom power +20V switchable to each XLR
    Monitor outputs 6.3mm stereo phones, 2 x RCA line
    Mute +24V relay contacts
    THD <0.76% @ 1kHz
    Input impedance 1k Ohms (mic/line)
    Input sensitivity -11dB (line), -46dB (mic)
    SNR 84dB (line), 82dB (mic)
    Bluetooth version 5.0
    Frequency response 100Hz - 24kHz
    Dimensions 433mm x 89mm x 302mm
    Weight 11.00KG
    Downloads

    Product Manual

    Frequently Asked

    How many zones can the RM406 drive independently?

    It has six independent output zones, and any input source can be matrix switched to any zone, so each area can play a different source at the same time.

    Can I use it with both 100V line and low-impedance speakers?

    Yes. The speaker terminals support 100V line, 8 Ohm, 4 Ohm and Com connections, so it works with distributed 100V systems and standard low-impedance speakers.

    What audio sources are built in?

    There is an integral USB/SD/FM player plus a Bluetooth 5.0 receiver, alongside three mic/line inputs and one auxiliary RCA input.

    Does it support paging and announcements?

    Yes. Mic 1 has a variable override, all mic inputs have mic priority, and a master chime with volume control is provided for paging calls and alerts.

    Do the microphone inputs supply phantom power?

    Each XLR mic input has switchable +20V phantom power, so you can use condenser microphones that require it.

    How much rack space does it need?

    The RM406 measures 433 x 89 x 302mm, which is a 2U rack size, and weighs 11kg.

    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.