Home > Studio Recording > Analog Gear > Preamps >

Earthworks 1024 ZDT Zero Distortion Microphone Preamp

Earthworks 1024
Earthworks 1024 ZDT
Alternative Views:

Save 10% on this product today by using discount SAVETEN during checkout!
List Price: $4,499.00
Our Price: $3,599.00

Availability: Usually Ships in 24 Hours
Product Code: 1720


Earthworks 1024 ZDT Preamplifier

The Earthworks 1024 ZDT Zero Distortion Microphone Preamp is the 4-channel version of what is arguably the most clean and pure microphone preamp ever designed. When people talk about 'straight wire with gain' they mean the Earthworks ZDT preamp!

The ZDT Zero Distortion Preamplifier™ series is based on discrete circuitry designed by David Blackmer, establishing a new standard of sonic excellence in electronics. This exacting new standard provides frequency response from 1Hz to 200kHz +0.5dB, a rise time of 0.27 microseconds and distortion of less than 1 part per million (0.0001%), eliminating all possibility of sonic degradation. These preamps are so fast, so clean and so transparent that you don’t even know they are there. It is like plugging your microphone into a “piece of wire with gain”. You will hear clarity and detail with the ZDT preamps that is not available in any other preamp at any price.

Professional Testimonial -
If you have some great microphones (any mic), the Earthworks ZDT preamp will make a significant difference. You will be hearing (really hearing) your mics for the first time. The Earthworks ZDT preamp is so pure and clean that you can hear detail and characteristics from your microphone that other preamps just cannot deliver. It’s like comparing Belden cable to Mogami® cable. There’s no comparison. All my microphones sound great through the Earthworks ZDT preamp with a detail I have never heard before.

If anyone else were to do the comparisons that I have done with the Earthworks ZDT preamp, I feel very confident that most if not all would come to the same conclusion I have come to. The proof is in the hearing! Specs may be important but bottom line, hearing is believing and that’s what is important when you are recording tracks in the studio.

When clients come to my studio they are blown away by the pristine clarity and cleanliness of the Earthworks ZDT preamp. My clients expect the best and that’s exactly what they get with the Earthworks ZDT. You just can’t beat it!

When a new preamp comes out I always compare it with Earthworks ZDT. Although, many people buy preamps for color or to color the sound, I feel that that is what microphones are for. To me quality comes first! Having a great quality preamp comes first then a great microphone to add certain characteristics and color to your sound.

If I had my way and could afford it, I would have all Earthworks ZDT preamps in my studio with a couple of Manley’s for the tube sound. In my opinion these are the best preamps on the market. The Earthworks ZDT preamps are awesome! You ask, ‘Where’s the beef?’ It’s in the Earthworks ZDT! Bottom line the Earthworks ZDT preamp delivers the cleanliness, airiness, punch, detail, sheen, sparkle and clarity any engineer would love to have. I know that is a lot adjectives to describe this preamp but it is true. See or should I say hear it for yourself and you decide. The Earthworks ZDT preamps are hands down, the best preamps on the market!
Wyatt Hill - Professional Recording Engineer

Earthworks 1024 ZDT Preamplifier Features

  • Zero Distortion – less than one part per million
  • 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
  • Separate XLR & 1/4” Phone (t-r-s) outputs, each with its own gain/level controls
  • 1/4” Phone connector output will drive balanced or unbalanced inputs
  • Lowest Noise of any preamp on the market
  • Full Differential (balanced) from XLR in to XLR out – no internal conversion to single-ended
  • All Discrete Components; Class A Amplification (No ICs in the signal path)
  • Greater Transparency with minimum signal path and minimum features

Earthworks 1024 ZDT Preamplifier Specifications

  • Preamp Type: Solid State
  • Number of Channels: 4
  • Frequency Response: 2Hz to 100kHz ±0.1dB, 1Hz to 200kHz ±0.5dB
  • Impulse Response: 1.4µs
  • Distortion: XLR out: 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
  • Power Requirement: 120V AC (100V and 200-240V versions available)
  • Input: 4 x XLR Female balanced transformerless
  • Input Impedance: 10KΩ phantom on, 100KΩ phantom off
  • Outputs:
    • 4 x XLR Male balanced transformerless (stepped)
    • 4 x ¼” TRS XLR Fem. balanced transformerless (variable)
  • Dimensions: 1 rack space 1.75” x 19” x 10.375”
  • Weight: 6 lb. (2.7kg)

Earthworks 1024 ZDT Zero Distortion Microphone Preamp Includes

  • 1024 ZDT Preamp
  • IEC Mains Power Cable
  • Warranty: All Earthworks ZDT Preamplifiers carry a 2-year limited warranty (parts and labor).

Earthworks 1024 ZDT Preamplifier Downloads

What We Think

The Earthworks ZDT Zero Distortion Microphone Preamplifiers have raised the bar for what it means for a preamp to be "a straight wire with gain." First of all, look at the frequency response: 2Hz to 100kHz ±0.1dB, 1Hz to 200kHz ±0.5dB. 'Nuff said. But where this microphone really shows itself off where the impulse response is concerned. This is an abnormally fast preamp. But the purpose of this preamp is to capture EVERYTHING sent by the microphone without adding anything else. It's pretty safe to say that David Blackmer's design has surpassed that goal, and then some. In fact, this preamp's specs are so impressive, we sell just as many of these to laboratories as we do audio industry professionals. We at Front End Audio have owned a 1022 ZDT for over 10 years for microphone evaluations since we need to hear the mic and only the mic. This is the only preamp available for meeting that purpose.

One important consideration for users of Earthworks microphones is that of Phantom Power Current. It may come as a shock to some (or many) that even some of the more sexy preamps out there in the wild don't supply enough phantom power current for the rather thirsty Earthworks microphones. To drive the signal coming from those tiny (but incredibly accurate) electret elements, it takes a lot of available on-demand current (not voltage) to do properly. Obviously, the Earthworks ZDT preamps are designed with this in mind. Plus, the lightning fast transient response will accurately reproduce the undistorted transients of the source material.
Alan Moon - Front End Audio

Click here to view all Earthworks products

You may also need...
HotWires MC-25 Microphone Cable (25 Foot) Stedman Proscreen PS101 Popfilter Golden Age R1 Tube Active Ribbon Microphone Colossal Cable Colossus Speaker Cable
Our Price: $11.95

Our Price: $38.99

Our Price: $349.99

Our Price: $115.00

HotWires MC-25 Stedman Proscreen PS101 Golden Age R1 Tube Active Colossal Cable Colossus