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Sonifex RB-DA24MD 24 Way Mono Distribution Amplifier with Input Gain
  • Sonifex RB-DA24MD 24 Way Mono Distribution Amplifier with Input Gain
  • Sonifex RB-DA24MD 24 Way Mono Distribution Amplifier with Input Gain
  • Sonifex RB-DA24MD 24 Way Mono Distribution Amplifier with Input Gain
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Sonifex RB-DA24MD 24 Way Mono Distribution Amplifier with Input Gain

Manufacturer: Sonifex Ltd.

Item #: SON-RB-DA24MD   •   MFG #: RB-DA24MD




The RB-DA24MD is a 1U rack mount high performance 24 way audio distribution amplifier. It has 2 inputs which can be each individually routed to 12 outputs, or mixed and routed to all 24 outputs. The inputs can be configured as either dual mono, input 1 routed to outputs 1-12 and input 2 routed to outputs 13-24, or mixed-mono, inputs 1 and 2 mixed at a pre-set level and routed to all 24 outputs. When set to mixed-mono operation there are 3 different output mix level modes, enabled by altering internal jumpers, providing -6dB, -3dB or 0dB adjustment of the output.

The XLR inputs and D-type outputs are electronically balanced and can be wired unbalanced. Each output is individually buffered so that a short circuit on one won't affect the others. Each output is also protected against connection to both POE (power over Ethernet) and phantom power circuits.

The RB-DA24MD has master gain controls for both input 1 and input 2 which are pre-set potentiometers accessible through the rear panel. These controls allow the gain to be adjusted from -15dB to +15dB, useful for normalising consumer to professional signals and vice versa. An LED power indicator on the front panel shows that the unit is powered.

A 125Hz 6dB per octave roll off filter is activated by a push switch on the rear panel. When selected the filter is the applied to both inputs.

  • Specifications

    • Audio Specification
    • Input impedance: >20kΩ bridging (balanced)
    • Output impedance: <50Ω
    • Maximum Input Level: +28dBu
    • Maximum Output Level: +28dBu
    • Frequency Response: 20Hz to 20kHz ±0.1dB (600Ω load, ref 1kHz)
    • Gain Range: Adjustable -15dB loss to +15dB gain
    • Common Mode Rejection: >66dB typically
    • LF Roll Off Filter : 125Hz at 6dB/octave
    • Distortion: 0.01%THD @ 1kHz, red + 8dBu output
    • Noise: -100dB unity gain, ref +8dBu output
    • Connections
    • Inputs: 2 x XLR 3 pin female (balanced)
    • Outputs: 2 x 25 way D-type plug (balanced, can be unbalanced)
    • Mains Input: Filtered IEC, switchable 110-120V, or 220-240V, fused, 12W maximum
    • Fuse Rating:
    • Anti-surge fuse 100mA 20 x 5mm (230VAC)
    • Anti-surge fuse 250mA 20 x 5mm (115VAC)

    • Dimensions:
    • 48cm (W) x 15.8cm (D) x 4.2 (H) (1U)
    • 19" (W) x 6.2" (D) x 1.7" (H) (1U)
    • Weight:
    • Net: 1.6kg Gross: 2.2kg
    • Net: 3.5lbs Gross: 4.8lbs