Audio Research SP20 preamplifier

Weight: 7.4 kg
Depth: 420 mm
Brand: Audio Research
Description: Type: preamplifier, standard: stereo, circuitry: class A, tube, connectors and interfaces: RS-232, stereo audio line input x 5, phono stage input, Preamp output, stereo audio line output x 2
Width: 480
Height: 134
Peculiarities: Display
Type: Preamplifier
Channel separation: 105 dB
Harmonic coefficient: 0.003 %
Signal to noise ratio: 125 dB
Connectors and interfaces: RS-232, Audio Line Stereo x 5, Phono Input, Preamp Out, Audio Line Stereo x 2
Standard: Stereo
Number of channels: 2
Connectors on the front panel: Headphone output
Lin sensitivity. entrance: 2000 mV
Input impedance lin. entrance: 200 kOhm
Maximum playback frequency: 220000 Hz
Minimum repeatable frequency: 0.8 Hz
Circuit design: Class A, lamp