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Sonifex RB-MA1 Single Microphone Amplifier, 2kOhm Input / <50Ohm Output Impedance, 20Hz to 20kHz Frequency Response, -10dBu Input & +28dBu Output Level, 1U

SKU: SORBMA1 MFR: RB-MA1
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Key Features

  • Achieve pristine sound with this Sonifex mic preamp, boasting a wide 36dB to 75dB gain range.
  • Enjoy ultra-low noise performance, ensuring clean audio recordings for professional results.
  • The 2kOhm input impedance of this microphone preamplifier accommodates various mics.
  • Experience balanced XLR connectivity for seamless integration into your studio setup.
  • This preamp's robust build quality ensures reliable performance for studio & field use.
  • Fine-tune your audio with precise gain control, perfect for vocals, instruments, & more.
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Sonifex RB-MA1 Specifications

  • Maximum Input Level

    -10dBu

  • Maximum Output Level

    +28dBu

  • Low Frequency Roll-Off

    125Hz at 6dB/octave

  • E.I.N.

    130dB

  • Common Mode Rejection

    >60dB typically

  • Frequency Response

    20Hz to 20kHz +/-0.1dB (600Ohms load, ref 1kHz)

  • Input Impedance

    2kOhms nominal balanced

  • Output Impedance

    <50Ohms

  • Gain Range

    Adjustable 36dB to 75dB gain

  • Distortion

    0.01% THD at 1kHz, ref +8dBu output

  • Phantom Power

    48V

  • 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)

  • Dimensions (W x D x H)

    11 x 4.3 x 1.7" / 27.94 x 10.92 x 4.31cm
    1U

  • Weight

    3lbs / 1.36kg

About Sonifex RB-MA1

Because professional audio quality matters, the Sonifex RB-MA1 Single Microphone Amplifier is expertly designed to deliver high-quality, reliable audio amplification. This durable microphone amplifier is equipped with a low-noise pre-amplifier, adept at converting mic level signals to line level, or driving long lines from microphones to mixing equipment, making it a versatile choice for both studio and video settings.

The RB-MA1 boasts a high frequency response of 20Hz to 20kHz, ensuring it can handle a broad spectrum of audio signals. Its low impedance of 2kOhm input and less than 50Ohm output makes it compatible with a wide array of microphones and audio equipment, enhancing its versatility.

All connections and controls are conveniently located on the rear panel for easy access. The microphone input is an XLR-3 type and is electronically balanced, accommodating both dynamic and powered microphones. The gain for the input can be finely adjusted by a recessed pre-set potentiometer, allowing for precise control over your audio output.

The line output, also an XLR-3 type, is electronically balanced and can be wired unbalanced by grounding the non-phase signal. This feature enables you to feed both balanced and unbalanced equipment, further enhancing its adaptability.

Additionally, the RB-MA1 comes with a switch to control a high pass filter, offering low frequency roll-off at 125Hz. It also provides phantom power at +48V to the connected microphone, ensuring optimal performance. With the Sonifex RB-MA1 Single Microphone Amplifier, you're investing in professional, high-quality audio amplification.

Sonifex RB-MA1 Features

  • High-quality Sonifex RB-MA1 Single Microphone Amplifier for professional audio amplification
  • Features a low-noise pre-amplifier, converting mic level signals to line level
  • Offers a high frequency response of 20Hz to 20kHz, suitable for a broad spectrum of audio signals
  • Low impedance of 2kOhm input and less than 50Ohm output, compatible with a variety of microphones and audio equipment
  • Electronically balanced XLR-3 type input and output, accommodating both dynamic and powered microphones
  • Includes a high pass filter switch and provides phantom power at +48V for optimal microphone performance

Product Documents

User Manual

Key Features

  • Achieve pristine sound with this Sonifex mic preamp, boasting a wide 36dB to 75dB gain range.
  • Enjoy ultra-low noise performance, ensuring clean audio recordings for professional results.
  • The 2kOhm input impedance of this microphone preamplifier accommodates various mics.
  • Experience balanced XLR connectivity for seamless integration into your studio setup.
  • This preamp's robust build quality ensures reliable performance for studio & field use.
  • Fine-tune your audio with precise gain control, perfect for vocals, instruments, & more.

What's in the box:

  • Sonifex RB-MA1 Single Microphone Amplifier
  • Sonifex 1 Year Warranty