Audio Research GS PRE

Previo de válvulas 4 x 6H30, clase A,
3 entradas RCA y 2 entradas XLR. Entrada de phono para giradiscos
Salidas RCA y XLR. Salida RS232, 12V y entrada IR 

FREQUENCY RESPONSE:

Line: +/-.3dB 2Hz to 80kHz; : -3dB 0.8Hz to 220KHz
Phono: +/- 0.1dB of RIAA 10Hz to 20KHz, +/-0.4dB 5Hz to 80KHz
Headphone: +/- 0.05dB 20Hz to 20KHz; : -3dB 0.8Hz to 220KHz
THD+N @ 1kHz:
Line: <.002% at 2V RMS, Bal output
Phono: <.005% at 3V RMS output, to Record output
Headphone: <.009% at 1V RMS output
GAIN @ 1kHz:
Line: 13.8 dB, Processor: 0dB
Phono: 58dB @ 1KHz to Record output
Headphone: 11.3dB
NOISE (A-WEIGHTED):
Line: <-101dBV volume at max.
Phono: <-77dBV to Record output
Headphone: <-88dBV volume at max.
CHANNEL SEPARATION @ 1kHz:
Line: > 75dB Balanced output
Phono: >70dB to Record output
Headphone: >60dB
SIGNAL TO NOISE RATIO @ 1kHz, A-WEIGHTED:
Line: >125dB Balanced output
Phono: >94dB to Record output
Headphone: >110d
INPUT IMPEDANCE: 150K ohms Balanced, 75K ohms SE; Phono impedance programmable (100, 200, 500, 1000 or 47K ohms w/200pf unbalanced)
OUTPUT IMPEDANCE @ 1kHz: 500 ohms Balanced, 250 ohms SE; <.05 ohms Headphone SE.
MAXIMUM INPUT:
Line: 12V RMS Balanced, 6.0V RMS SE.
Phono: 11mV RMS at 1KHz.
RATED OUTPUT:
Line: 2V RMS (1V RMS SE) into 200K ohms balanced load (maximum balanced output capability is 15V RMS at less than .5% THD+N at 1KHz.)
Phono: 0.5V RMS into 200K load, Max output same as line stage.
Headphone: 6V RMS maximum into 30 to 300 ohm load.
CONTROLS: Volume, Input Selector. 5 Push Buttons: Power, Mute, SPKR Off, Mono, Menu. Rear; RS-232 control, Remote IR input & Remote Trigger out.
POWER SUPPLIES: Electronically regulated low and high voltage supplies. Automatic 45 sec. warm-up & brown-out mute. Line regulation better than .01%.