Earthworks 1021 Zero Distortion Technology Microphone Preamp

Earthworks 1021 Zero Distortion Technology Microphone Preamp. Unit powers on and tests O.K. with an inexpensive dynamic type microphone (our “quick test” unit) and a small amplifier. 48V phantom power also verified. Good condition with minor use scuffs. A warranty seal is present and intact. No microphone, manual, cables or other accessories. Purchaser responsible for proper wiring, installation and use. 

Earthworks 1021 Single-channel Mic Preamplifier Features:

• Zero Distortion – less than 1 part per million
• High output level: +30dBu
• Frequency response: 1Hz to 200kHz (±0.5dB)
• Distortion: XLR out: <1ppm (0.0001%); 1/4” out: 0.001%
• Very-low-output impedance drives long lines without interference or signal loss
• True 48V phantom power, polarity reverse, and clip indicator
• XLR and 1/4″ TRS (variable) outputs with gain/level controls
• Gain switchable from 5dB to 60dB in 5dB steps
• 1/4″ TRS output will drive balanced or unbalanced inputs
• Full-differential (balanced) circuit 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

Redefining the state-of-the-art

Earthworks’ ZDT Zero Distortion preamplifier series is based on discrete circuitry designed by David Blackmer. Redefining the state-of-the-art for sonic excellence in electronics design, ZDT technology delivers a frequency response from 1Hz to 200kHz (+0.5dB), a rise time of 0.27 microseconds, and distortion of less than 0.0001% to eliminate all possible sources of sonic degradation. The 1021 is so fast, so clean, and so transparent that you won’t even know it’s in the signal chain. It’s like plugging your mic into the proverbial “straight wire with gain.” You will re-discover your microphones, revealing astonishing clarity and detail you didn’t know they were capable of.