MZ-123BT 3-Zone Compact Audio Mixer with Bluetooth 1U

Product Features

• Slim rackmount mixer that can flexibly assign background music and mic announcements to three different output zones
• Built-in Bluetooth receiver for wireless audio playback from smartphones or tablets
• Bluetooth antenna installed on the front panel ensures a stable wireless connection within the specified range
• Three stereo line inputs
• Two RCA unbalanced line inputs on rear panel
• Bluetooth/Aux input on front panel
• Gain controls on rear panel
• Two mic inputs for announcements or moderation
• Connection via Euroblock connectors on the rear panel
• Mic 1 can also be connected via the front-panel XLR/TRS combo connector (input level switchable HIGH/LOW)
• Talkover function automatically lowers background music volume according to mic volume (with rear-panel controls for threshold, time and on/off)
• PAD, high-pass filter and 48-volt phantom power on each mic input (switchable on/off on the rear panel)
• Rear-panel controls for gain and three-band EQ
• Level controls and zone selection buttons on each mic and stereo line input
• Signal and peak indicators on each mic and stereo line input
• Three zone outputs with level controls, signal and peak indicators and monitor selection buttons
• Headphones output with level control for monitoring the zone outputs
• Compact 1U rackmount size

Product Specification

Analogue audio inputs   

• Connector, front panel:
  • XLR/TRS combo connector
  • XLR-3-31 (1: GND, 2: HOT, 3: COLD)
  • 6.3-mm TRS jacks (Tip: HOT, Ring: COLD, Sleeve: GND)
• Connector, rear panel: 2 × Euroblock
• Input impedance: 2.4 kΩ
• Nominal input level:
  • –26 dBu (front connector set to HIGH or rear connector PAD OFF)
  • –2 dBu (front connector set to LOW or rear connector PAD ON)
• Maximum input level:
  • –10 dBu (front connector set to HIGH or rear connector PAD OFF)
  • +14 dBu (front connector set to LOW or rear connector PAD ON)
• Minimum input level:
  • –65 dBu (front connector set to HIGH or rear connector PAD OFF)
  • –41 dBu (front connector set to LOW or rear connector PAD ON)
• Line inputs (unbalanced): RCA pin jacks
• Nominal input level: –10 dBV
• Maximum input level: +6 dBV
• Input impedance: ≥10 kΩ
• Aux inputs (unbalanced): 3.5-mm stereo mini jack
• Nominal input level: –20 dBV
• Maximum input level: –4 dBV
• Input impedance: ≥10 kΩ

Analogue audio outputs

• Outputs 1–3 (balanced): 3 × Euroblock
• Nominal output level: +4 dBu (volume knob set to 0 dB)
• Maximum output level: +24 dBu
• Output impedance: 200 Ω
• Headphones output: 6.3-mm stereo jack
• Maximum output power: 80 mW + 80 mW (THD+N ≤0.1 %, 32 Ω load)

Audio performance

• Equivalent input noise (EIN):
  • ≤–125 dB(A)
  • (mic input to line output, 150 Ω, 20-kHz LPF) 
• Mic input to line output:
  • 20 Hz – 20 kHz, +0.5 dB / –1 dB
  • (GAIN at min., VOLUME at 0 dB, JEITA)
• Line input to line output:
  • 20 Hz – 20 kHz, ±0.5 dB
  • (GAIN at min., VOLUME at 0 dB, JEITA) 
• Mic input (front) to line output: ≤0.02 %
• Mic input (rear) to line output: ≤0.01 %
• Line input to line output: ≤0.01 %
• S/N ratio: ≥90 dB
• Crosstalk attenuation: ≥80 dB

Bluetooth

• Bluetooth version: 4.2
• Output class: Class 2
• Supported profile: A2DP
• Supported A2DP codecs: SBC, AAC, aptX™
• A2DP content protection: SCMS-T
• Antenna: RP-SMA (female)

Power supply and other specifications

• Power supply: AC 100–240 V, 50/60 Hz
• Power consumption: 25 W
• Overall dimensions (width × height × depth): 483 mm × 47 mm × 275 mm
• Weight: 3.0 kg
• Permissible operating temperature: 0–40 °C

What’s in the Box?

• Power cord
• 8 Euroblock plugs with cable band kit
• rackmount screw kit
• Owner’s Manual
• Bluetooth antenna