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Earthworks Now Shipping 521 500 Series Pre-Amp

521_K-1013Earthworks’ 521 ZDT Preamps for its 500 series racks are now in stock and shipping. Based on the ZDT Pre-amp technology designed by David Blackmer, the Earthworks 521 brings the exacting standards of the ZDT Zero Distortion Pre-amplifiers 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 Zero Distortion Pre-amplifiers. The transformer-less output stage of the 521 will easily drive long cable runs without loss of quality. Transparent gain is switchable from 5 dB to 60 dB in 5 dB steps.

The Earthworks microphone pre-amplifier 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 ±0.5 dB) and distortion of less than 1 part per million (0.0001 percent). 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.

The Earthworks 521 lists for $999 and full specs are here.

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