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Mackie MDB1A Active Direct Box Powered Via 48V Phantom Power - Musko Music Store

Mackie MDB1A Active Direct Box Powered Via 48V Phantom Power

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MDB1A Active Direct Box Powered Via 48V Phantom Power

Great for active instruments like guitars and basses with active pickups and preamps, the MDB-1A Active DI features increased headroom and distortion-free operation.

Featuring a ¼” high-impedance input and thru with -20db pad plus a Merge switch that turns the Thru jack into a second input, perfect for summing a stereo source to a mono output.

The balanced XLR output features switches for Polarity, Low Cut, and Ground Lift. For maximum convenience, the MDB-1A is powered by 48v phantom power.


    Product Features

    • Active circuitry offers higher headroom for ultra-low noise and distortion-free performance
    • High-impedance 1/4” input with Thru output
    • Balanced male XLR output connector with Ground Lift
    • Low Cut and Polarity switches
    • Merge switch allows connection of stereo sources which are then summed to mono at the output, perfect for stereo sources like keyboards and media players
    • -20dB pad ensures distortion-free performance when connecting to high-level sources
    • Powered via 48v Phantom Power
    • Built-Like-A-Tank construction

    Product Specifications


    • Frequency Response: 20 Hz – 20 kHz
    • Signal-to-Noise Ratio: 90 dB
    • Dynamic Range: 130 dB
    • Total Harmonic Distortion: 0.02% THDF @1 kHz
    • Input Type: Female 1/4” Unbalanced 
    • Input Impedance: 330 k ohm
    • Output Type: Male XLR Balanced 1/4” Unbalanced (Thru)
    • Output Impedance: 150 ohm balanced 

    Physical & Dimensions

    • Height: 38mm
    • Width: 86mm
    • Depth: 147mm
    • Weight: 0.4kg

    Delivery approx. 5-8 days from our supplier