Audio Research LS27 User Manual

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Owner’s Manual
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Model
LS27
Stereo Preamplifier
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audio research
H I G H D E F I N I T I O N®

Audio Research LS27 Specifications

Frequency and Distortion

frequency response	0.2Hz to 160kHz
distortion	Less than .01% at 2V RMS BAL output
rated outputs	2V RMS 1Hz to 100kHz into 200K ohm balanced load

Gain and Input Specifications

gain main output	Selectable for each input: 24dB, 18dB, 12dB Balanced output
input impedance	120K ohms Balanced, 60K ohms SE
maximum input	Low Gain: 48V RMS BAL, 24V RMS SE, Medium Gain: 24V RMS BAL, 12V RMS SE, High Gain: 12V RMS BAL, 6V RMS SE

Output Specifications

output impedance	700 ohms Balanced, 350 ohms SE Main
output polarity	Non-inverting
output capability	15V RMS at less than 0.5% THD at 1kHz

Power and Dimensions

power requirements	105-130VAC 60Hz (210-260VAC 50/60Hz) 50 watts maximum
dimensions	19" (48 cm) W x 5.25" (13.4 cm) H x 13.3" (33.8 cm) D
weight	16.3 lbs. (7.4 kg) Net; 23 lbs. (10.5 kg) Shipping