Adastra MM321 Bluetooth Rack Mixer with USB & FM Player & multiple XLR / RCA inputs
DETAILS
The Adastra MM321 is a versatile 19" rack-mount pre-amp mixer designed for installed background music and PA systems.
Ideal for use in bars, restaurants, places of worship, conference rooms, schools, and wedding venues, it features multiple XLR and RCA inputs for flexible connectivity with microphones and external audio sources while saving space in compact installations.
A built-in media player supports Bluetooth streaming, USB playback, and an FM tuner, allowing easy access to various audio sources without additional equipment. The MM321 features 3 XLR microphone inputs with individually switchable +20V phantom power, 2 RCA aux inputs, and a dedicated RCA record output for capturing audio. The balanced XLR and 6.35mm mono jack outputs provide seamless integration with your existing background music or PA system.
Designed for professional installations, the MM321 includes 24V emergency mute contacts, making it compatible with fire alarm systems for safety-conscious venues. It can be powered by 100V, 240V, or 24V, offering flexibility for installations in a variety of locations. Rack-mount ears are included for secure integration into a rack cabinet or case.
With its versatile connectivity, built-in media playback, and emergency mute functionality, the Adastra MM321 is a reliable solution for audio management in commercial and public spaces.
Adastra MM321 Key Features:
- Multiple inputs – 3 XLR microphone inputs, 2 stereo RCA aux inputs, and 1 RCA record output
- Built-in media player – Bluetooth, USB, and FM tuner for flexible audio playback
- Phantom power – Individually switchable +20V phantom power for condenser microphones
- Balanced & unbalanced outputs – XLR and 6.35mm mono jack outputs for PA system integration
- 24V emergency mute contacts – Connects to fire alarm systems for enhanced safety compliance
- Rack-mountable – Includes rack ears for secure installation in a 19" cabinet or case
- Flexible power options – Operates on 100V, 240V, or 24V for versatile installations
- Ideal for professional venues – Bars, restaurants, conference rooms, schools, places of worship, and event spaces
View the Adastra range of products HERE
SPECS & DOWNLOADS
Download the PDF User Manual HERE
Adastra MM321 Specifications
- Power supply: 100-240Vac, 50/60Hz
- Fuse: T1AL
- Inputs : mic/line: 3 x XLR (bal/unbal)
- Inputs : aux: 2 x L+R RCA
- Input : line: 3.5mm jack to media player
- 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)
- Controls: Media, 3 x Mic/Line, 2 x Aux, Treble, Bass, Master level
- 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: -45dBV
- Input sensitivity : aux/line: -10dBV
- Signal to noise ratio : mic: 55dB
- Signal to noise ratio : aux/line: 60dB
- THD: 0.05%
- Dimensions: 482 x 130 x 44mm
- Weight: 1.43kg


