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Sonifex RB-MA1 Single Microphone Amplifier

Single Microphone Amplifier

The RB-MA1 consists of a low noise microphone pre-amplifier for converting mic level signals to line level, or for driving long lines from microphones to mixing equipment.

Part No:

RB-MA1

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£398.00 £331.67

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Description

The RB-MA1 consists of a low noise microphone pre-amplifier for converting mic level signals to line level, or for driving long lines from microphones to mixing equipment.
The connections and controls are on the rear panel. The microphone input is an XLR-3 type and is electronically balanced. The gain for the input can be adjusted by a recessed pre-set potentiometer which allows for the use of both dynamic and powered microphones.

The line output is of an XLR-3 type and is electronically balanced. It can be wired unbalanced by grounding the non-phase signal, allowing you to feed both balanced and unbalanced equipment.

There is a switch to control a high pass filter (low frequency roll-off at 125Hz) and to provide phantom power at +48V to the connected microphone.

Specification

More Information
Specification	Audio Specification Maximum Input Level: -10dBu Maximum Output Level: +28dBu Low Frequency Roll-Off: 125Hz @ 6dB/octave E.I.N.: 130dB Common Mode Rejection: >60dB typically Frequency Response: 20Hz to 20kHz ±0.1dB (600Ω load, ref 1kHz) Input Impedance: 2kΩ nominal balanced Output Impedance: <50Ω Gain Range: Adjustable 36dB to 75dB gain Distortion: 0.01% THD @ 1kHz, ref +8dBu output Phantom Power: 48V Connections Input: 1 x XLR 3 pin female (Balanced) Output: 1 x XLR 3 pin male (Balanced, can be unbalanced) Mains Input: Filtered IEC, switchable 110-120V, or 220-240V, fused, 6W max Fuse Rating: Anti-surge fuse 100mA 20 x 5mm (230VAC) Anti-surge fuse 250mA 20 x 5mm (115VAC) Equipment Type RB-MA1: Single microphone amplifier Physical Specification Dimensions (Raw): 28cm (W) x 10.8cm (D) x 4.2cm (H) (1U) 11” (W) x 4.3” (D) x 1.7” (H) (1U) Dimensions (Boxed): 36cm (W) x 20.5cm (D) x 6cm (H) 14.2” (W) x 8” (D) x 2.4” (H) Weight: Nett: 0.90kg Gross: 1.35kg / Nett: 2lbs Gross: 3lbs