Radial Power Pre 500 Series Mic Preamp

Was £415.99

Special Price £249.00

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Hammond broadcast transformer output

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Manufacturer: Radial

Category: Recording & Playback



The Radial PowerPre is a high performance microphone preamplifier designed to be used with the Radial Workhorse and other 500 series modular racks. It features 100% discrete components for optimal signal transfer and employs a 'vintage' Hammond broadcast output transformer for warmth and exceptionally smooth tone.

The design begins with a front mounted XLR for instant connectivity plus a recessed 48V phantom power switch for safety. Unlike most mic preamps that require careful gain adjustment to avoid troublesome noise, the PowerPre is equipped with the newly developed AccuState™ input stage that automatically optimizes signal-to-noise at all levels with up to 55dB of gain. This is supported with a full 10 segment LED meter for precise signal monitoring.

To add extra character; a 3-position Vox control lets you set the PowerPre to 'breath' for added high frequency air such as when accentuating a vocal track or adding harmonic content to an acoustic guitar. The 'punch' setting adds body when recording electric guitar or can be used to fatten a voice. When set to linear, the PowerPre delivers a truly natural rendering for orchestral recording that will suit the most demanding purist. This is augmented with a gentle high-pass filter that helps control low end resonance when layering acoustic instruments.

Ultra quiet, low noise and exceptionally warm sounding… the PowerPre makes spectacular audio easy.

Additional Info

Additional Info

Specifications are subject to change without notice.
*Refers to use with Radial Workhorse rack and mixer
Microphone Input  
Circuit type: 100% discrete, transformer coupled output
Microphone Input: Accustate input fully variable gain control
Current draw: 130mA (maximum draw)
Frequency response: 20Hz ~ 20KHz +0/-1dB
Input Impedance: 2.2kΩ (1.5kΩ with pad)
Mic preamp gain: +55dB
Maximum gain: +70dB when used with Workhorse*
Maximum output: +22dBu
Output impedance: 75O @ 1kHz
Output type: Transformer isolated
Common mode rejection (CMRR): >75dB
Equivalent Input Noise (EIN): -122dBu @ maximum gain
Dynamic range: >97dB
Total Harmonic Distortion (THD+N): 0.03% @ mid gain with +10dBu output
Intermodulation distortion (IMD): 0.012% @ 50dB gain with +10dBu output
Instrument Input  
Omniport input Impedance: 150kΩ, unbalanced*
Instrument preamp gain: +55dB, unbalanced*
Equivalent Input Noise (EIN): -95dBu, unbalanced*
Total Harmonic Distortion (THD+N): 0.05% @ mid gain with +10dB output
Control Panel  
Meter: 10 segment peak indicator with hold
Pad: -15dB
Polarity: Inverts pins 2 and 3 at XLR input*
High-pass filter: 150Hz cut off, -3dB @ 100Hz
Vox Control: 3 position preset EQ
Phantom power: 48VDC - 10mA (as supplied by 500 frame)
XLR configuration: AES spec: pin-1 ground, pin-2 (+), pin-3 (-)
Ground lift (rear panel): Lifts ground on front panel XLR input only
Weight: 1.5lbs (0.7Kg)
Shipping size: 9 x 6.5 x 2 (inches)
Compliance (API): Yes
Compliance (WHOS-Doc): Yes
Warranty: 3 years, transferable