audio research
M-100

Description
Tube mono power amplifier.

Introduced
1984

Discontinued
?

Revisions
-

Options
-

MSRP (US new retail)
$4,990/pair

Specifications

Power output 100 watts minimum continuous at 16 ohms from 20Hz to 20kHz with less than 1% total harmonic distortion (typically below .005% at 1 watt). Approximate actual power available at "clipping"; 115 watts (1kHz).
Power bandwidth (-3dB points) 12Hz to 60kHz
Frequency response  
Input sensitivity 0.7V RMS for rated output
Input impedance 65K ohms, nominal
Output taps  
Output regulation Approximately .4dB, 16 ohm load to open circuit
Overall negative feedback 19 dB
Damping factor Approximately 20
Distortion Intermodulation distortion: Less than .2% at 1dB below rated output (100V P to P, 16 ohms - SMPTE method)
Slew rate 15 V/µs
Rise time 5 µs
Hum & noise Less than 2mV RMS 90dB below rated output (broad-bandwidth unweighted, inputs shorted)
Power supply energy storage Approximately 280 joules
Power requirements 105-125VAC 60Hz (210-240VAC 50Hz) 800 watts maximum. 300 watts at "idle" - 400 watts at rated output power
Tube complement (2) 6DJ8, (5) 7044, (2 matched pairs) 6550, (1) 6550, (1) 12AT7
Other  
Dimensions 19" (48 cm) W (standard rack panel) x 7" (18 cm) H x 16.5" (42 cm) D (front panel back). Handles extend 1 5/8" (4.1 cm) forward of the front panel. Output connector extends 1" behind rear panel.
Weight 53 lbs. (24 kg) Net; 69 lbs. (31 kg) Shipping

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