Free Delivery on all orders over £99*

Adastra MM321 1U Rack Mixer with Bluetooth & USB/FM Player

£25999
The RRP is the manufacturer's recommended retail price of the item.
Limited Stock
We are an Independent UK Company
Price match. Found it cheaper? Contact us
Trade Discount Available
Description

The Adastra MM321 is a rack-mountable 1U mixer with a built-in media player and Bluetooth receiver, made for background music, public address and house PA systems. It gives you three mono inputs, each connecting via XLR microphone or line input on a switchable basis, so you can run condenser microphones, dynamic microphones or line sources from the same channels. Two stereo auxiliary line inputs sit on RCA (phono) connectors, and a stereo record output lets you capture what is going through the mixer.

Each of the three mono inputs has switchable +20V phantom power for use with condenser microphones or D.I. boxes, and channel 1 has a variable priority function that ducks or mutes the other channels when you need to make an announcement. There are also 24V emergency mute contacts that silence everything except channel 1, which is handy for evacuation messages and paging. Rear panel DIP switches handle the mic/line and phantom settings, along with the priority muting level, while treble, bass and master controls sit up front.

The media player runs in four modes: 3.5mm Aux input, USB audio player, FM radio tuner and Bluetooth receiver for playback from a phone or tablet. Main left and right outputs are fed to XLR, with an extra mono summed output on a 6.3mm jack for feeding an amplifier or a second zone. The unit runs from a universal 100-240Vac IEC supply, measures 482 x 130 x 44mm and weighs 1.43kg. It is straightforward to set up and use, so you can get music and announcements running without a steep learning curve.

Specification
Power supply 100-240Vac, 50/60Hz (IEC)
Inputs : Mic/Line 3 x XLR (bal/unbal)
Audio source Internal Bluetooth, USB & FM player
Outputs L+R XLR, Mono 6.3mm jack, Record out (RCA)
Emergency control 24V contacts mute all except channel 1
Phantom power +20V (switchable channels 1-3)
Fuse T1AL
Controls Media, 3 x Mic/Line, 2 x Aux, Treble, Bass, Master level
Inputs : Aux 2 x L+R RCA
Input : line 3.5mm jack to media player
Rear panel controls Priority muting level, mic/line and phantom DIP switches
Input impedance 2.2k Ohms (mic/line), 10k Ohms (aux)
Frequency response : mic 20Hz - 18kHz
Frequency response : line 14Hz - 20kHz
Frequency response : aux 10Hz - 23kHz
Input sensitivity : mic/line -45dBV
Input sensitivity : aux/line -10dBV
Signal to noise ratio : mic 55dB
Signal to noise ratio : aux/line 60dB
THD 0.05%
Dimensions 482mm x 130mm x 44mm
Weight 1.43KG
Downloads

Product Manual

Frequently Asked

How many microphone inputs does the MM321 have?

It has three mono inputs on XLR, each switchable between microphone and line level, so you can run up to three microphones or line sources.

Does it provide phantom power for condenser microphones?

Yes. Each of the three mono channels has switchable +20V phantom power for condenser microphones or D.I. boxes, set via rear panel DIP switches.

What can I play through the built-in media player?

The media player works in four modes: a 3.5mm Aux input, USB audio playback, an FM radio tuner and a Bluetooth receiver for streaming from a phone or tablet.

How does the priority muting work?

Channel 1 has a variable priority function that reduces or mutes the other channels for announcements. There are also 24V emergency mute contacts that silence everything except channel 1.

What outputs are available?

Main left and right outputs are on XLR, with an additional mono summed output on a 6.3mm jack and a stereo record output on RCA (phono) connectors.

Will it fit a standard equipment rack?

Yes. It is a 1U rack-mountable unit measuring 482 x 130 x 44mm and weighing 1.43kg.

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.

See it lit, in person

Lighting looks different in a real room. Come and see our range at our showrooms in Birmingham, Hong Kong and Dubai, or talk to our design team wherever you are.

Niori lighting showroom trailer video with closeups of alabaster lighting

Why Niori

Over 20 years lighting homes worldwide

We are a specialist lighting and mirror retailer with showrooms in Birmingham, Hong Kong and Dubai, shipping to customers around the world. Our own design team is here to help, from first idea to final fitting.

Genuine products

An authorised stockist

Every product arrives brand new with the full manufacturer warranty. Found it cheaper elsewhere? Ask us about a price match.

Ordering with us

Free delivery over £99

Free delivery on orders over £99, in the UK and worldwide. Easy returns within 14 days, subject to our returns policy. Full manufacturer warranty included.

Design help

Not sure what you need?

Our design team can help you plan your lighting, share photos and videos of stock, and send samples worldwide. Book a showroom visit in Birmingham, Hong Kong or Dubai, or ask about our lighting design service.

You Might Also Like

Recommended For You

    Our Reviews

    From first click to final installation, our customers share how Niori lights up their spaces. Read their words and envision what’s possible for yours.

    Featured Projects

    Step into our portfolio and see how we transform homes, restaurants, and commercial spaces and more, worldwide. Click here for a closer look at our latest projects.

    Description

    The Adastra MM321 is a rack-mountable 1U mixer with a built-in media player and Bluetooth receiver, made for background music, public address and house PA systems. It gives you three mono inputs, each connecting via XLR microphone or line input on a switchable basis, so you can run condenser microphones, dynamic microphones or line sources from the same channels. Two stereo auxiliary line inputs sit on RCA (phono) connectors, and a stereo record output lets you capture what is going through the mixer.

    Each of the three mono inputs has switchable +20V phantom power for use with condenser microphones or D.I. boxes, and channel 1 has a variable priority function that ducks or mutes the other channels when you need to make an announcement. There are also 24V emergency mute contacts that silence everything except channel 1, which is handy for evacuation messages and paging. Rear panel DIP switches handle the mic/line and phantom settings, along with the priority muting level, while treble, bass and master controls sit up front.

    The media player runs in four modes: 3.5mm Aux input, USB audio player, FM radio tuner and Bluetooth receiver for playback from a phone or tablet. Main left and right outputs are fed to XLR, with an extra mono summed output on a 6.3mm jack for feeding an amplifier or a second zone. The unit runs from a universal 100-240Vac IEC supply, measures 482 x 130 x 44mm and weighs 1.43kg. It is straightforward to set up and use, so you can get music and announcements running without a steep learning curve.

    Specification
    Power supply 100-240Vac, 50/60Hz (IEC)
    Inputs : Mic/Line 3 x XLR (bal/unbal)
    Audio source Internal Bluetooth, USB & FM player
    Outputs L+R XLR, Mono 6.3mm jack, Record out (RCA)
    Emergency control 24V contacts mute all except channel 1
    Phantom power +20V (switchable channels 1-3)
    Fuse T1AL
    Controls Media, 3 x Mic/Line, 2 x Aux, Treble, Bass, Master level
    Inputs : Aux 2 x L+R RCA
    Input : line 3.5mm jack to media player
    Rear panel controls Priority muting level, mic/line and phantom DIP switches
    Input impedance 2.2k Ohms (mic/line), 10k Ohms (aux)
    Frequency response : mic 20Hz - 18kHz
    Frequency response : line 14Hz - 20kHz
    Frequency response : aux 10Hz - 23kHz
    Input sensitivity : mic/line -45dBV
    Input sensitivity : aux/line -10dBV
    Signal to noise ratio : mic 55dB
    Signal to noise ratio : aux/line 60dB
    THD 0.05%
    Dimensions 482mm x 130mm x 44mm
    Weight 1.43KG
    Downloads

    Product Manual

    Frequently Asked

    How many microphone inputs does the MM321 have?

    It has three mono inputs on XLR, each switchable between microphone and line level, so you can run up to three microphones or line sources.

    Does it provide phantom power for condenser microphones?

    Yes. Each of the three mono channels has switchable +20V phantom power for condenser microphones or D.I. boxes, set via rear panel DIP switches.

    What can I play through the built-in media player?

    The media player works in four modes: a 3.5mm Aux input, USB audio playback, an FM radio tuner and a Bluetooth receiver for streaming from a phone or tablet.

    How does the priority muting work?

    Channel 1 has a variable priority function that reduces or mutes the other channels for announcements. There are also 24V emergency mute contacts that silence everything except channel 1.

    What outputs are available?

    Main left and right outputs are on XLR, with an additional mono summed output on a 6.3mm jack and a stereo record output on RCA (phono) connectors.

    Will it fit a standard equipment rack?

    Yes. It is a 1U rack-mountable unit measuring 482 x 130 x 44mm and weighing 1.43kg.

    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.