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Item # H74110

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Radial Engineering PowerPre Mic Preamplifier
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      Radial Engineering PowerPre Mic Preamplifier (H74110)
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Warm, accurate and noise free.

The Radial PowerPre Microphone Preamp is one of the eight modules designed to be comprise the Radial Workhorse Rack and Mixer System that combines the popular 500 series platform with an incredibly flexible patching system to let you create the ultimate studio environment.

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.

Radial Engineering PowerPre Mic Preamplifier Features:

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


Radial Engineering PowerPre Mic Preamplifier Specifications:

  • 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: 2.2kO (1.5kO 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: 150kO, 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

    Mechanical:
    Weight: 1.5lb. (0.7Kg)
    Shipping size: 9 x 6.5 x 2 (inches)
    Compliance (API): Yes
    Compliance (WHOS-Doc): Yes
    Warranty: 3 years, transferables


Radial Engineering PowerPre Mic Preamplifier

90 day warranty on footswitch and tubes. One year warranty on all other products.

Get your gear covered!

Now you can get added warranty protection for your new gear. Pro Coverage steps in where the manufacturer's "normal wear and tear" ends. Our PRO COVERAGE program offers you UPGRADED COVERAGE if your product ever fails!

Pro Coverage includes:

  • Accidental damage protection (new gear only)
  • Expedited Repair
  • Free Shipping (for returns or repairs)
  • 100% Coverage for Commercial Use
  • Extended Return Period
  • Extended Price Protection
  • No Lemon Guarantee
  • Free Transfer of Coverage to a new owner
  • Repair Costs Covered for up to 3 years from date of purchase
  • Repairs Can Be Authorized Toll-Free by Phone or the via the web
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