What are the specs for the Audio Research SP15 + SP15PS?

Frequency Response:

High level input: ±1dB 0.2Hz to 100kHz. -3dB below 0.1Hz and above 200kHz. Phono input: ±.2dB of RIAA 20Hz to 40kHz. ±1dB of RIAA 1.0Hz to 100kHz.

Distortion:

Harmonic distortion: Less than .005% at 2V RMS output, 5Hz to 20kHz (Typically less than .001% at midband, phono or line input). Intermodulation distortion: Less than .003% at 2V RMS output

Noise & Hum:

IHF weighted, shorted input: Output (Gain down): 6µV (110dB below rated output). Input (High level): 3µV equivalent input (110dB below 1V input). Phono: 0.15µV equivalent input (76dB below 1mV input)

Gain:

At 1kHz, bypass mode: Phono input to tape output: 46dB (0.2V output from 1mV input). Phono input to main output: 75dB (0.175mV input for 1V output). High level input to main output: 29dB (36mV input for 1V output).

Input Impedance:

Phono: Front panel selectable 47K, 100, 30, 10, 3 ohms. Phono input capacitance: 150 pF at 10kHz. High level: 20K ohms or higher, depending on switch functions.

Output Impedance:

200 ohms main, direct, inverted outputs. 500 ohms tape output. Recommended load 60K-100K ohms and 100pF (20Kohms minimum, 1000pF maximum)

Output Polarity:

Tape outputs, direct output: Non-inverting. Invert output: Inverting. Main outputs (2): Selectable non-inverting or inverting. All outputs may be used simultaneously.

Maximum Inputs:

Phono: 350 mV RMS at 1kHz, 1200 mV RMS at 10kHz (0.1 second maximum duration, 6dB less if continuous). High level: 25V RMS.

Rated Outputs:

2V RMS 1Hz to 100kHz main, direct, inverted outputs. (Maximum 80V RMS at 0.2% THD at 1kHz into 60K ohm load with 2.85V RMS high level input).

Power Supplies:

-

Tube Complement:

(3) 6DJ8/ECC88

Power Requirements:

95-135VAC 60Hz, 190-270VAC 50/60Hz, 130 Watts maximum

Other:

Filter: 25Hz Hi-pass phono subsonic 6dB/octave rolloff (to eliminate ringing) with transition to 12dB/octave at 10Hz. Front panel switchable phono only. Controls (6): Gain, Attenuator, Balance, Mode, Input, Impedance. Switches (8): Tape monitor, Copy, Tape 1/2, Tape 1to2 / 2to1, Mute, Invert phase, Bypass, Filter.

Dimensions:

(Each chassis, EIA Rack panel mounting) 19" (48 cm) W x 5 ¼" (13.4 cm) H x 10 ¼" (26 cm) D. Handles extend 1 ⅝" (4.1 cm) forward of panel. Interconnect cable extends 4" behind rear of chassis.

Weight:

SP-15: 14 lbs. (6.4 kg) Net, 23 lbs. (10.5 kg) Shipping. SP-15PS: 15 lbs. (6.8 kg) Net, 23 lbs. (10.5 kg) Shipping. Total: 29 lbs. (13.2 kg) Net, 46 lbs. (21.0 kg) Shipping.