Audio Research SP20 Tube Pre-Amplifier, Silver Finish

The SP20 is a full-function line stage which incorporates a phono preamplifier and a ¼" headphone jack. Front panel controls have been minimized to two rotary controls and an interactive touch screen display, along with power, mute and output selector buttons.

About this product

Fantastic condition trade-in Audio Research SP20 in Silver Finish. Unit comes in original box with power cord and owner's manual.

Unit is rated 8/10 for very minor cosmetic wear consistent with age (see photos).

SPECIFICATIONS

• 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
  19V 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) (standard rack panel)
  Depth 16.5"(42 cm) D.

  WEIGHT
  17.8 lbs. (7.4 kg) Net;
  27.8 lbs. (10.5 kg) Shipping.

Additional Information
Please call 734.662.3595 and ask for Richard if you have any questions about this product. We make every effort to update our ads quickly when inventory fluctuates, but we encourage you to call and check product availability, as we are also a brick and mortar store.

For a complete listing of all of our specials, please visit: https://www.paragonsns.com/product-category/preowned-specials/