Radial Engineering PowerPre Mic Preamp with Hammond Transformer and Vox Control EQ

Radial Engineering's 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.

Features

• Hand selected 100% discrete electronics
• Hammond broadcast transformer output
• AccuState™ low-noise input circuit
• 3-position Vox control for added air or punch

Specifications

• Audio Circuit Type: 100"% discrete, transformer-coupled output
• Frequency Response: 20 Hz - 20 kHz, +0/-1 dB
• Dynamic Range: >97 dB
• Gain: +55 dB
• Total Harmonic Distortion: 0.03% @ mid gain with +10 dBu output
• Intermodulation Distortion: 0.012% @ 50 dB gain with +10 dBu output
• Input Connector: XLR
  • Input Impedance: 2.2 kΩ (1.5 kΩ with pad)
  • Common Mode Rejection Ratio (CMRR): >75 dB
  • Equivalent Input Noise (EIN): -122 dBu @ maximum gain
  • Maximum Input: +70 dB when used with Workhorse (sold separately)
• Output Connector: XLR
  • Output Impedance: 75 Ω @ 1 kHz
  • Maximum Output: +22 dBu
• Features: Input pad, 180° polarity reverse, ground lift, HPF, phantom Power
• Maximum Power Rating: 130 mA (maximum draw)
• Conditions: For use in dry locations only, 5-40°C
• Dimensions (H x W x D): 6.5" x 2" x 9"
• Weight: 1.5 lbs