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Up for auction is a nearly MINT CROWN PSL-2 audio preamp. The Crown PSL-2 is a professional stereo preamplifier, bringing all system components together in a single versatile control unit. “Straight-Line” signal path engineering results in very low distortion. That is the brief description direct from Crown... in plain English, this is an amazingly clear sounding preamp that is equally at home in a pro-audio recording studio as it would be in a high-end home audio setup.
Here are the specs:
SONIC PERFORMANCE
Signal-to-Noise:
(A-weighted) 103 dB below rated output for all inputs except Phono. 93 dB below rated 10 mV phono input.
Total Harmonic Distortion (THD):
Less than 0.009% from 20 Hz to 20 kHz at rated output.
Less than 0.0009% at 1 kHz with IHF load.
Phono: Less than 0.009% from 20 Hz to 20 kHz.
Intermodulation Distortion (IMD):
(60 Hz and 7 kHz 4:1) Less than 0.0025% at rated output.
Phono: Less than 0.0025% at rated output.
Phono Gain:
Adjustable 30 to 50 dB (33 to 330 mV for rated output).
Low Filter:
18 dB per octave slope, down 32 dB at 10 Hz.
Loudness Compensation:
Bass compensation matched to ISO curves (Robinson-Dadson) down to 60 phons; tracked to Level (gain) control with active network to eliminate unwanted subsonic boost.
Muting:
Seven second turn-on delay during which the outputs are shorted to prevent turn-on transients from reaching the speakers.
Input Impedance:
Tape, Tuner, CD and Aux 25 kohms; phono 47 kohms in parallel with less than 50pF.
Input Sensitivity:
250mV applied to Tape, Tuner, CD or Aux input yields full rated output at full gain of 20 dB.
Output Impedence:
600 ohms.
Output Level:
Main and phono outputs: 2.5 volts

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