This massive amplifier proves just how much difference an amplifier can make in high quality music reproduction. Its exceptional stability and low distortion along with its tremendous reserves of power, result in remarkably clean performance. Transient response is superb. Built-in metered adjustments. Beautiful precision construction. For superior stereo or monaural reproduction, Audio Classics offers the finest amplifier made today.

Audio Classics 9B
Stereo Power Amplifier

Stereo Operation:
50 WPC at 4 or 8 ohm load with EL34 tubes
80 WPC at 4 or 8 ohm load with KT88 tubes

Mono Operation:
100 watts at 2 or 4 ohm load with EL34 tubes
160 watts at 2 or 4 ohm load with KT88 tubes

Total Harmonic Distortion:
< 0.1% mid-frequencies at rated output
< 0.3% 20 Hz at rated output
< 0.3% 20 kHz at rated output

Hum and Noise:
> 90 dB below rated output

Damping Factor:
8 dB

Frequency Response:
∼3 dB 10 Hz to 100 kHz

Input for Rated Output:
1.2 volt RMS at 100k impedance bal/unbal

Tube Complement:
(4) 12AU7
(4) EL34 or KT88
Output tubes are not interchangeable

Power Requirement:
120 volt, 60 Hz, 250 watt

Dimensions:
17.5" x 8.287" x 15.876"
(44.5 x 21.05 x 40.33) cm

Weight:
60 lbs (27 kg)
shipping 70 lbs (32 kg)