Audio Research > Amplificateur Tubes D70 (2 x 70 W)

Power output

70 Watts per channel minimum continous (both channels operating) at 16 ohms from 20Hz to 20kHz with less that 1% total harmonic distortion (typically below .005% at one watt)

Power bandwidth

15 Hz. to 30 Khz (-3 dB points)

Frequency response

Input sensitivity

Input impedance

Output taps

Output regulation

Overall negative feedback

20.5 dB (D-70 MKII)

Damping factor

15 (D-70 MKII)

Distortion

Harmonic Distortion: Less than 1% (typically less than .005% @1W) (D-70 MKII)

Slew rate

10 V/µs (D-70 MKII)

Rise time

Hum & noise

Power supply energy storage

140 joules

Power requirements

Tube complement

D-70: (7) 6922, (2 matched pairs) 6550, (1) 6550, (1)12AX7

Other

Dimensions

19" W x 7" H x 16.5" D

Weight

49 lbs. Net, 63 lbs. Shipping