Sonifex RB-MA1 Single Microphone Amplifer

Vendor: Sonifex
Sonifex RB-MA1 Single Microphone Amplifer To drive lengthy lines from microphones to mix equipment or to convert mic-level signals to line level, the RB-MA1 is composed of a low-noise microphone pre-amplifier. On the...
$466.00
Title

Sonifex RB-MA1 Single Microphone Amplifer

To drive lengthy lines from microphones to mix equipment or to convert mic-level signals to line level, the RB-MA1 is composed of a low-noise microphone pre-amplifier. On the back panel are the controls and connections. The microphone input is electronically balanced and of the XLR-3 variety. Both dynamic and powered microphones can be used by adjusting the gain of the input via a recessed pre-set potentiometer. The line output is electronically balanced and of the XLR-3 type. You can supply both balanced and unbalanced equipment by wiring it unbalanced by grounding the non-phase signal. A switch is present to operate a high pass filter, which has a low frequency roll-off at 125Hz, and to supply the attached microphone with phantom power at +48V.

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