Radio Design Labs RUMX5ML

5-Channel Microphone/Line Audio Mixer with Phantom Power

OUR PART #: RUMX5ML Write the First Review.

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Our Price: $287.06
List Price: $384.00
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Radio Design Labs' RU-MX5ML is the ideal choice in many applications where a combination of balanced mic and/or balanced or unbalanced line-level signals needs to be mixed with the ability for additional expansion.  All connections are made using detachable terminal blocks on the rear panel.  Four of the RU-MX5ML inputs can accept either mic or line inputs.  The fifth input is for line level sources.

24 V phantom is individually switch selectable for each mic input.  The output from one RU-MX5ML may connect to the MIX input of another RU-MX5ML to expand mixing capabilities.  Up to 3 RU-MX5ML mixers may be rack mounted in a single rack unit using an RDL RU-RA3HD rack adapter.  The output section provides both a balanced line (+4 dBu) and balanced microphone level (-45 dBu) output.  Both outputs may be used at the same time.  Audio levels are adjustable on the front panel.  The output is equipped with a front-panel dual-LED VU meter that follows standard VU ballistics.

NOTE: Radio Design Labs' PS-24AS power supply is NOT included but is required in order to power this product.  Please see the "Accessories" tab or click here for more information on the PS-24AS power supply.


  • Five Channel Mic/Line Audio Mixer with Expansion Capability
  • Inputs and Outputs on Detachable Terminal Blocks
  • Switchable 24 V Phantom for Each Mic Input
  • Balanced Mic and Line Outputs
  • Expansion Bussing Capability
  • Output Level dual-LED VU Metering
  • Studio-Quality, Low-Noise Performance


  • Inputs (6): 4 selectable mic or line level; 1 line level; 1 direct MIX; detachable terminal block
  • Input Impedance:
    - Mic: >1.2 kOhm balanced
    - Line: >10 kOhm balanced
  • Maximum Input Level:
    - Mic: -20 dBu
    - Line: +24 dBu
  • Phantom: Switch-selectable 24 V (IEC 1938: 1996-12)
  • Gain:
    - Mic: Off to 65 dB
    - Line: Off to 15 dB
  • Outputs (2):
    - Mic: -45 dBu balanced
    - Line: +4 dBu balanced; detachable terminal block
  • Output Impedance: 150 Ohm balanced
  • Frequency Response:
    - Mic: 80 Hz to 40 kHz (±1 dB, < -6 dB at 20 Hz with integral high-pass filter)
    - Line: 10 Hz to 35 kHz (± 0.5 dB)
  • THD+N:
    - Mic: < 0.03%
    - Line: <0.003%
  • Headroom: 20 dB (above +4 dBu output)
  • Noise:
    < -70 dB below +4 dBu output (20 Hz to 20 kHz, all mic channels at 50 dB gain; or one mic channel active at 60 dB gain)
    < -90 dB below +4 dBu (20 Hz to 20 kHz, all channels off)
  • CMRR:
    - Mic: > -65 dB (10 Hz to 10 kHz)
    - Line: > -45 dB
  • Metering: Dual-LED VU Meter (calibrated to +4 dBu)
  • Power Requirement: GROUND-REFERENCED, 24 Vdc @ 75 mA (120 mA max. including phantom); detachable terminal block
  • Dimensions: 1.7" H x 5.8" W x 4.8" D (4.3 x 5.8 x 12.2 cm)
  • Ambient Operating Environment: 0° C to 55° C

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