Audio Research

SP20

Influenced by some of our classic groundbreaking SP preamplifiers, the SP20 takes visual cues from past Audio Research products while incorporating our latest designs and technologies. The SP20 is a full-function line stage which incorporates a phono preamplifier and, for the first time ever on an Audio Research preamp, there is a ¼" headphone jack. **Price In USD**

Regular price $9,000.00
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Influenced by some of our classic groundbreaking SP preamplifiers, the SP20 takes visual cues from past Audio Research products while incorporating our latest designs and technologies. The SP20 is a full-function line stage which incorporates a phono preamplifier and, for the first time ever on an Audio Research preamp, there is a ¼" headphone jack. **Price In USD**

  • FREQUENCY RESPONSE: Line: +/- 3dB 2 Hz to 80 kHz; -3dB 0.8Hz to 220 kHz, 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: Line: <.003% at 2V RMS, Bal output, Phono: <.005% at 3V RMS output, to Record output, Headphone: <.009% at 1V RMS output
  • GAIN: Line: 13.8dB, Processor: 0dB, Phono: 58dB @ 1KHz to Record output, Headphone: 11.3dB
  • NOISE: Line: <-101dBV volume at max, Phono: <-77dBV to Record output, Headphone: <-88dBV volume at max.
  • CHANNEL SEPARATION: Line: > 105dB Balanced output, Phono: >76dB to Record output, Headphone: >62dB
  • SIGNAL TO NOISE RATIO: Line: >125dB Balanced output, Phono: >94dB to Record output, Headphone: >110dB
  • RATED OUTPUTS: Line: 2V RMS (1V RMS SE) into 200k ohms balanced load (maximum balanced output capability is 18V RMS at less than .5% THD+N at 1kHz.).
    Phono: 0.5V RMS into 100k load at Record output (maximum output capability is 25V RMS). Headphone: 6V RMS maximum into 30 to 300 ohm load.
  • INPUT IMPEDANCE: 120k ohms Balanced, 60k ohms SE; Phono impedance programmable (100, 200, 500, 1000 or 47k ohms w/200pf unbalanced).
  • OUTPUT IMPEDANCE: 500 ohms Balanced, 250 ohms SE; 1000 ohms Record Out SE; <.05 ohms Headphone SE.
  • OUTPUT POLARITY: Non-inverting. 
  • MAXIMUM INPUT LINE:m19V RMS Balanced, 9V RMS SE. Phono: 70mV RMS at 1kHz.
  • CONTROLS: Rotary Volume (104 steps), Rotary Input selector. Push
  • BUTTONS: Power, Mute, SPKR Off. Interactive Touch Screen. Rear RS-232 control and Remote IR input.
  • POWER SUPPLIES: Electronically regulated low and high voltage supplies. Automatic 30 sec. warm-up/brown-out mute. Line regulation better than .01%. 
  • TUBE COMPLEMENT: 4 6H30 dual triode.
  • POWER REQUIREMENTS: 100 - 135VAC 60Hz (200 - 270VAC 50/60Hz) 77 watts maximum. Standby 2.7 watts.
  • DIMENSIONS: Width 19" (48 cm), Height 5.25"(13.4 cm), Depth 16.5"(42 cm)