What are the specs for the Audio Research Classic 60?

Power Output:

60 watts minimum continuous at 16 ohms from 15Hz to 20kHz with less than 1.0% total harmonic distortion. Typically below .005% at 1 watt. Approximate actual power available at "clipping": 62 watts. (1kHz) (Note that the actual RMS power output is dependent upon both line voltage and "condition" ie: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not very critical.)

Power Bandwidth:

(-3dB points): 12Hz to 40kHz

Frequency Response:

-

Input Sensitivity:

.55V RMS for rated output

Input Impedance:

100K ohms, nominal

Output Taps:

-

Output Regulation:

Approximately 0.3dB 16 ohm load to open circuit

Overall Negative Feedback:

20dB

Damping Factor:

Approximately 30

Distortion:

-

Slew Rate:

20V/µs

Rise Time:

2.0 µs

Hum & Noise:

Less than 2.0mV RMS - 84dB below rated output (20kHz bandwidth unweighted, inputs shorted)

Power Supply Energy Storage:

Approximately 280 joules

Power Requirements:

105-125VAC 60Hz (210-250VAC 50Hz) 500 watts at rated output, 700 watts maximum, 370 watts at "idle"

Tube Complement:

(4 matched pairs) 6550 power output, (4) 6FQ7/6CG7 drivers

Dimensions:

19" (48 cm) W (standard rack panel) x 7" (18 cm) H x 15 ¾" (40 cm) D (front panel back). Handles extend 1 ⅝" (4.1 cm) forward of the front panel. Output connectors extend 1" behind rear panel.

Weight:

63 lbs (28.64 kg) Net, 76 lbs (34.55 kg) Shipping