Audio Database


McIntosh MC122 210,000yen(around the 1998 time)

Stereo power amplifier which attained high-quality sound-ization maintaining a high robustness by various guarding systems.

If the signal wave form of an input/output is always compared and 0.3% or more of difference is detected by a power guarding functionality, by the time it will lower gain automatically, it will prevent an unusual operation and distortion of an output will exceed 2%, a safe over drive of 14dB will be secured.
In addition, circuitries, such as a sentry monitor which is a protection network of an output stage, and a temperature protection which prevents overheat and realizes a long life, are raising the robustness.

The driver stage was made into cascade connection and is high-speed-ized.

The input level control is carried in the rear panel, and a fine tune of each channel is possible.


Rating of a mode
Form Stereo power amplifier
Output power
(succession sine wave)
120W+120W (4ohm)
80W+80W (8ohm)
Output load impedance 4ohm, 8ohm
Rated power band 20Hz - 20kHz
Dynamic head room 1.6dB
Frequency characteristic 20Hz-20kHz+0 -0.25 dB
10Hz-100kHz+0 -3 dB
THD 0.005% or less (at the time of 250mW - an Output power, 20Hz - 20kHz, and both ch(es) drive)
Cross modulation distortion 0.005%
(20Hz - 20kHz. Both channel drive.
It is a moment peek per channel at the double less than time of an Output power.
SN ratio 110dB (at the time below of an Output power)
Input sensitivity 0.8V (2.5V, level-control central it1 location)
Input impedance 10kohm
Dumping factor 100 (4ohms) or less
200 (8ohms) or less
Dimensions Width 445x height 92x depth of 445mm
Weight 10.9kg