sonifex rb da24md 1

The Sonifex 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 applied to both inputs.

RB-DA24MD Diagram

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


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)

Equipment Type

RB-DA24MD:24-way mono distribution amplifier

Physical Specification

Dimensions (Raw):48cm (W) x 15.8cm (D) x 4.2 (H) (1U) 19” (W) x 6.2” (D) x 1.7” (H) (1U)
Dimensions (Boxed):58.5cm (W) x 27.4cm (D) x 10.8cm (H) 23” (W) x 10.9” (D) x 4.3” (H)
Weight:Nett: 1.6kg       Gross: 2.2kg Nett: 3.5lbs      Gross: 4.8lbs
BW Price Guarantee

(Subject to conditions)

Sonifex RB-DA24MD


Tech Support

2-Year Warranty


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