ADASTRA MM321 Rack Mixer: Bluetooth, USB & FM Player, 1U Rackmount

The ADASTRA MM321 is a versatile 1U rackmount mic/line mixer designed for professional audio mixing and distribution. It features a built-in Bluetooth receiver, USB audio playback, and FM tuner, making it ideal for public address systems, background music, and live performances. With three XLR inputs supporting switchable +20V phantom power, this mixer ensures high-quality sound for microphones and line sources. The user-friendly interface includes controls for treble, bass, and master level, along with auxiliary inputs for additional audio sources.

Features

• Built-in Bluetooth Receiver: Easily connect smartphones or tablets for wireless audio playback.
• FM Tuner: Enjoy FM radio with clear reception.
• Three XLR Inputs: Connect microphones or line sources with switchable +20V phantom power for condenser mics.
• Two RCA Auxiliary Inputs: Additional stereo inputs for versatile audio connections.
• Variable Priority Muting: Channel 1 features a priority function for important announcements.
• Compact Design: Rack-mountable 1U size fits seamlessly into any audio setup.
• User-Friendly Controls: Simple operation with dedicated knobs for volume, treble, bass, and source selection.

Specifications

• Power Supply: 100-240Vac, 50/60Hz (IEC)
• Inputs (Mic/Line): 3 x XLR (balanced/unbalanced)
• Audio Sources: 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 for channels 1-3)
• Fuse: T1AL
• 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: 482 x 130 x 44mm
• Weight: 1.43kg