The Adastra MM321 is a versatile 1U rack-mountable mixer designed for both professional and casual audio applications. It features a built-in Bluetooth receiver, USB audio playback, and an FM tuner, making it ideal for public address systems, background music, and live events. With three XLR microphone/line inputs, switchable +20V phantom power, and two stereo auxiliary inputs, this mixer offers flexibility and ease of use for any audio setup.

Features

• Built-in Bluetooth Receiver: Stream audio wirelessly from smartphones and tablets.
• USB Audio Playback: Play music directly from USB devices for seamless integration.
• FM Tuner: Access FM radio stations for added entertainment options.
• Switchable +20V Phantom Power: Supports condenser microphones and D.I. boxes.
• Variable Priority Muting: Channel 1 features priority muting for essential announcements.
• Emergency Mute Contacts: 24V contacts mute all channels except channel 1 for safety.
• Compact Design: Rack-mountable 1U mixer saves space while providing powerful functionality.

Specifications

• Power Supply: 100-240Vac, 50/60Hz (IEC)
• Mic/Line Inputs: 3 x XLR (balanced/unbalanced)
• Aux Inputs: 2 x L+R RCA
• Line Input: 3.5mm jack for media player
• Audio Sources: Internal Bluetooth, USB, and FM player
• Bluetooth Version: 5.0
• Outputs: L+R XLR, Mono 6.3mm jack, Record out (RCA)
• Emergency Control: 24V contacts mute all except channel 1
• Phantom Power: +20V (switchable for channels 1-3)
• Controls: Media, 3 x Mic/Line, 2 x Aux, Treble, Bass, Master level
• 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
• Total Harmonic Distortion (THD): 0.05%
• Dimensions (W×H×D): 482 x 130 x 44mm
• Weight: 1.43kg