Radial Engineering MCBOOST
Microphone Signal Booster for Dynamic and Ribbon Microphones

OUR PART #  MCBOOST


The Radial McBoost™ is a high performance microphone signal booster designed to elevate the output of a typical dynamic microphone for greater transient response, and to boost the signal of a low-output ribbon mic to bring it up to a usable level for mixing consoles or preamps that may not provide sufficient gain.

The 100% discrete class-A circuit design begins with a dual-transistor J-FET circuit to produce up to 25dB of gain without introducing noise, color or artifact. Each individual transistor is carefully measured and batch-sorted to comply with the design specification to certify performance. As with all Radial™ products, the circuit board is then loaded into a 14-gauge, I-beam, reinforced steel enclosure to prevent outside stress from torquing which otherwise could lead to premature part failure. A book-end cover creates protective zones at each end to safeguard the switches, potentiometer and connectors from the rigours of the road.

Merely connect the McBoost in-line using standard 3-pin XLRs and activate 48V phantom to provide power. Select between three impedance settings to optimize the response and then reduce low-frequency clutter with the 3-position high-pass filter. The McBoost will elevate the output to produce added clarity, excitement and extra drive for long cables whether you are in a recording studio, on a live concert stage or in a broadcast center.

Radial Engineering McBoost Features:

  • 25dB signal booster for dynamic & ribbon mics
  • Extends dynamic range and microphone reach
  • Uses standard 48V phantom for power
  • 3-position load switch and high-pass filter

Radial Engineering McBoost Specifications:

  • Audio circuit type: Class-A Differential FET/BipolarHybrid
  • Frequency response: 7Hz to 30kHz
  • Total harmonic distortion:  0.005% @-30dB
  • Dynamic range:  105dB
  • Maximum input:  -6dBu
  • Maximum gain:  +25dB
  • Equivalent input noise:  -120dBu
  • Input impedance:
    • 600 Ohm
    • 2.7 kOhm
    • 30 kOhm
  • Clip level - input: -17dBu / -14Bu / -9dBu
  • Clip level - output: +10dBu
  • Noise floor: -95dBu / -98dBu / -113dBu
  • Output impedance: 2.2 kOhm
  • Intermodulation distortion: 0.01%
  • Phase Deviation: 0° @ 20Hz, <10° @ 20kHz
  • Features:
    • Gain control: Variable from +4dB to +25dB
    • High-pass filter:  100Hz and 55Hz @-3dB
    • Filter slope:  6dB / Octave
    • XLR configuration: Pin 2 + / Pin 3 - / Pin 1 Ground
  • General:
    • Construction: 14 gauge steel chassis & outer shell
    • Finish: Durable powder coat
    • Size: (L x W x H): 4.2" x 2.76" x 1.68" (106.7 x 70.1 x 42.7mm)
    • Weight: .5 lbs. (0.23 kg)
    • Shipping size (L x W x H): 6.25" x 4.25" x 3" (158.7 x 108 x 76.2mm)
    • Shipping weight: 1.4 lbs. (0.64 kg)
    • Power: Passive, no power required
    • Conditions: For use in dry locations only between 5°C and 40°C
    • Warranty: Radial 3-year, transferable

Radial Engineering MCBOOST
Microphone Signal Booster for Dynamic and Ribbon Microphones

OUR PART #  MCBOOST

Product Information:

The Radial McBoost™ is a high performance microphone signal booster designed to elevate the output of a typical dynamic microphone for greater transient response, and to boost the signal of a low-output ribbon mic to bring it up to a usable level for mixing consoles or preamps that may not provide sufficient gain.

The 100% discrete class-A circuit design begins with a dual-transistor J-FET circuit to produce up to 25dB of gain without introducing noise, color or artifact. Each individual transistor is carefully measured and batch-sorted to comply with the design specification to certify performance. As with all Radial™ products, the circuit board is then loaded into a 14-gauge, I-beam, reinforced steel enclosure to prevent outside stress from torquing which otherwise could lead to premature part failure. A book-end cover creates protective zones at each end to safeguard the switches, potentiometer and connectors from the rigours of the road.

Merely connect the McBoost in-line using standard 3-pin XLRs and activate 48V phantom to provide power. Select between three impedance settings to optimize the response and then reduce low-frequency clutter with the 3-position high-pass filter. The McBoost will elevate the output to produce added clarity, excitement and extra drive for long cables whether you are in a recording studio, on a live concert stage or in a broadcast center.

Radial Engineering McBoost Features:

  • 25dB signal booster for dynamic & ribbon mics
  • Extends dynamic range and microphone reach
  • Uses standard 48V phantom for power
  • 3-position load switch and high-pass filter

Radial Engineering McBoost Specifications:

  • Audio circuit type: Class-A Differential FET/BipolarHybrid
  • Frequency response: 7Hz to 30kHz
  • Total harmonic distortion:  0.005% @-30dB
  • Dynamic range:  105dB
  • Maximum input:  -6dBu
  • Maximum gain:  +25dB
  • Equivalent input noise:  -120dBu
  • Input impedance:
    • 600 Ohm
    • 2.7 kOhm
    • 30 kOhm
  • Clip level - input: -17dBu / -14Bu / -9dBu
  • Clip level - output: +10dBu
  • Noise floor: -95dBu / -98dBu / -113dBu
  • Output impedance: 2.2 kOhm
  • Intermodulation distortion: 0.01%
  • Phase Deviation: 0° @ 20Hz, <10° @ 20kHz
  • Features:
    • Gain control: Variable from +4dB to +25dB
    • High-pass filter:  100Hz and 55Hz @-3dB
    • Filter slope:  6dB / Octave
    • XLR configuration: Pin 2 + / Pin 3 - / Pin 1 Ground
  • General:
    • Construction: 14 gauge steel chassis & outer shell
    • Finish: Durable powder coat
    • Size: (L x W x H): 4.2" x 2.76" x 1.68" (106.7 x 70.1 x 42.7mm)
    • Weight: .5 lbs. (0.23 kg)
    • Shipping size (L x W x H): 6.25" x 4.25" x 3" (158.7 x 108 x 76.2mm)
    • Shipping weight: 1.4 lbs. (0.64 kg)
    • Power: Passive, no power required
    • Conditions: For use in dry locations only between 5°C and 40°C
    • Warranty: Radial 3-year, transferable
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