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RDL RU-MX4L Pro 4-CH. Line Level Mixer Microphone & Line Output
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    RDL RU-MX4L Pro 4-CH. Line Level Mixer Microphone & Line Output

    Manufacturer: Radio Design Labs

    Item #: RU-MX4L   •   MFG #: RU-MX4L







    Required Accessories

    The RDL RU‑MX4L is the ideal choice in many applications where a combination of balanced and/or unbalanced line‑level signals needs to be mixed. Balanced connections use XLR connectors. Unbalanced signals are coupled through phono jacks. Each of the four RU‑MX4L inputs can accept either a balanced XLR line‑level input or an unbalanced line‑level phono jack input. The unbalanced phono jack LINE OUTPUT from one RU‑MX4L may connect to the unbalanced input of other equipment, or may be connected to the DIRECT input of another RU‑MX4L or an RU‑MX4 to expand mixing capabilities.

    Up to 3 RU‑MX4 type mixers may be rack mounted in a single rack unit using an RDL RU‑RA3HD rack adapter. The RU‑MX4L provides one balanced output, switchable for mic or line level. Audio levels are adjustable on the front panel. Each input channel is equipped with a front‑panel dual‑LED VU meter that follows standard VU ballistics. The final mix is displayed on an LED string VU meter featuring a visually comfortable arc motion. A factory installed output isolation transformer is available by ordering the RU‑MX4LT.

    Required Power Supply RDL PS24V Sold Separately

    • Features

      • Four Channel Line‑Level Audio Mixer
      • XLR Balanced, Phono Jack Unbalanced Inputs
      • Mic or Line XLR Output, Switchable
      • Unbalanced Line Output and Direct Input
      • Studio Quality, Low‑Noise Performance
      • Expansion Bussing Capability
      • Additional Line Inputs Bussed to an RU‑MX4
      • Output Isolation Transformer (RU‑MX4LT)


    by PowerReviews
    Radio Design Labs RU-MX4L Professional 4 Channel Line Level Mixer - Microphone and Line Output

    (based on 1 review)

    Ratings Distribution

    • 5 Stars



    • 4 Stars



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    • 2 Stars



    • 1 Stars



    Reviewed by 1 customer

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    (0 of 1 customers found this review helpful)


    Terrible Product!!

    By Bill Posier

    from Irvine, Ca

    About Me Pro Audio / DJ

    Verified Reviewer



      • Overpriced
      • Poor Quality

      Best Uses

        Comments about Radio Design Labs RU-MX4L Professional 4 Channel Line Level Mixer - Microphone and Line Output:

        This was the second one of these that I purchased. I thought the problems with the first one were just a fluke so I purchased a second one. These things are absolute junk. After a very short amount of time they start becoming very noisy when you turn the volume controls and when you turn one it effects the volume of the other. For the price they charge for this, it should be of a much, much higher quality.

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        Add Accessories for your RU-MX4L: