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  Earthworks 521 ZDT 500-Series Microphone Preamp

Earthworks 521 ZDT
Earthworks 521 ZDT
 
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List Price: $1,249.00
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Product Code: 9999-14005

 

Earthworks 521 ZDT 500-Series Microphone Preamp

Earthworks 521 ZDT 500-Series Microphone Preamp

Earthworks 521 ZDT 500-Series Microphone Preamp Details

Based on the ZDT Preamp technology designed by David Blackmer, the Earthworks 521 ZDT 500-Series Microphone Preamp brings the exacting standards of the Zero Distortion Technology preamplifiers to the convenient 500 series format, providing a "wire with gain" option to the 500 series rack. The solid state ZDT 521 features switchable phantom power, polarity invert, and peak amplitude clip detection, just as in the original 1021 Single Channel ZDT Preamp. The transformerless output stage of 521 ZDT will easily drive long cable runs without loss of quality, making it ideal for remote recordings. Transparent gain is switchable from 5dB to 60dB in 5dB steps.

The Earthworks mic amp topology provides outstanding common mode rejection, excellent overload margin and an incredibly low noise floor, combined with the ultra wide bandwidth of the ZDT Preamps (1Hz to 200kHz +0.5dB) and distortion of less than 1 part per million (0.0001%). This exceptional level of performance is maintained over an extensive range of impedances applied to the input, making the 521 ZDT suitable for practically any microphone - ribbon, dynamic or condenser.

Earthworks 521 ZDT 500-Series Microphone Preamp Features

  • Zero Distortion "" less than one part per million (>0.0001%)
  • High output level +30dBu
  • Very Low Output Impedance will drive long lines without interference or signal loss
  • True 48 volt phantom, polarity reverse & clip indicator
  • Lowest Noise of any preamp on the market
  • All Discrete Components; Class A Amplification (No ICs in the signal path)
  • No Electrolytic Capacitors in the signal path
  • Greater Transparency with minimum signal path and minimum features
  • Full Differential (balanced) from Input to Output (i.e. no internal conversion to single-ended)
  • Clean, pristine, uncolored sound
  • Solid-state, transformerless
  • Switchable 48V phantom power
  • Polarity invert switch
  • Peak amplitude clip detection
  • Transparent gain switchable from 5dB to 60dB in 5dB steps
  • Ultra-low noise floor
  • Ultra-wide bandwidth
  • Front panel t-r-s connector with adjustable output level
  • Suitable for most ribbon, dynamic or condenser microphones
  • Requires a 500 series rack
  • 15-year Warranty

Earthworks 521 ZDT 500-Series Microphone Preamp Specifications

  • Preamp Type: Solid State
  • Number of Channels: 1
  • Frequency Response: 2Hz to 100kHz ±0.1dB, 1Hz to 200kHz ±0.5dB
  • Impulse Response: 1.4µs
  • Distortion: main output: less than 1ppm (0.0001%); 1/4" out: 0.001%
  • Input Noise: 1.6nVHz½ at 20dB gain; 0.6nV/Hz½ at 60dB gain
  • EIN: -132dBV at 20dB gain; -143dBV at 60dB gain
  • Slew Rate: 22V/µs
  • Output DC Offset: ±1 mV typical, servo balanced
  • Input / Output Connector: 500 Series EDAC Edge connector
  • Input Impedance: 10KΩ phantom on, 100KΩ phantom off
  • Front Panel Balanced Out: ¼" t-r-s Fem. balanced transformerless (variable)
  • Dimensions: 1 500 series rack space 1.5" x 5.25" x 6"
  • Weight: 0.8 lb. (0.36kg)

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