NAD 3120 دليل المستخدم

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3120 Integrated Amplifier
Date of manufacture : Jan 84 - Jan 87
Please note that this document contains the text from the original product brochure, and some technical statements may now be out of date
The NAD 3020 is the most highly praised low-power amplifier in high-fidelity history. Critics around the
world have praised its accuracy, musicality, and seemingly effortless power. The 3020B the latest version
of this classic, contains several improvements but no fundamental change in design.
The

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Infrasonic and Ultrasonic Filtering. Audio signals often are contaminated with interference at frequencies below and above the audible range-turntable rumble, floor vibration, tonearm/ stylus resonance, radio/TV interference, and home-computer static. Amplification of such signals would tend to waste amplifier power, cause bass distortion due to excess woofer cone travel, and produce audible intermodulation distortion. The precise, minimum-phase, audio bandpass filtering in the NAD 3020B and 312

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PRE-AMP SECTION Phono input Input impedance (R and C) 47kΩ / 100pF Input sensitivity, 1kHz MM 2.7mV ref. 0.5V MC 180μV Signal/Noise ratio (A-weighted with cartridge connected) MM 75dB ref. 5mV MC 73dB ref. 0.5mV RIAA response accuracy (20Hz - 20kHz) ±0.5dB Line level inputs Input impedance (R and C) 20kΩ / 220pF Input sensitivity (ref. 1W) 180mV Maximum input signal >25V Signal/Noise ratio (A-weighted ref 1W) 90dB Frequency response 20Hz - 20kHz / ±0.5dB POWER AMP SECTION Continuous output power