521 ZDT

Earthworks Audio

Based on the ZDT Preamp technology designed by David Blackmer, theEarthworks 521brings the exacting standards of the Zero Distortion Technology preamplifiers to the convenient 500 series format, providing a pristine amplification option to the 500 Series rack. The solid state 521 features switchable phantom power, polarity invert, and peak amplitude clip detection, just as in the original ZDT Preamplifier Series. The transformerless output stage of the 521 will easily drive long cable runs without loss of quality. Transparent gain is switchable from 5dB to 60dB in 5dB steps. The Earthworks microphone preamplifier 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 suitable for practically any microphone – ribbon, dynamic or condenser. Features:

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

PRODUCT SPECIFICATIONS

CONDITION

New

TUBE OR SOLID STATE

Solid State

CHANNELS

Single-Channel

CHASSIS

Module

MODULE TYPE

500 Series

MODULE SLOT COUNT

1 Slot

DIRECT INPUT

DIGITAL I/O