Radial Engineering McBoost

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.

• 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

SPECIFICATIONS:

Audio circuit type: Class-A Differential FET/Bipolar Hybrid

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 , 2.7k , 30k

Clip level - input: -17dBu / -14Bu / -9dBu

Clip level - output: +10dBu

Noise floor: -95dBu / -98dBu / -113dBu

Output impedance: 2.2k

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 (0.23kg)

Shipping size: (L x W x H)6.25" x 4.25" x 3" (158.7 x 108 x 76.2mm)

Shipping weight: 1.4lbs (0.64kg)

Power: 48V phantom

Conditions: For use in dry locations only between 5C and 40C