McIntosh MC122
¥ 210,000 (around 1998)
Commentary
A stereo power amplifier with high sound quality while maintaining high reliability through various guard systems.
The power guard function constantly compares the input and output signal waveforms. When a difference of 0.3% or more is detected, the gain is automatically lowered to prevent abnormal operation. A safe overdrive of 14 dB is guaranteed until the output distortion exceeds 2%.
In addition, reliability is enhanced by circuits such as the Sentry Monitor, which protects the output stage, and temperature protection, which prevents overheating and realizes a long life.
High speed is achieved by cascade connection of driver stages.
The input level control on the rear panel allows fine adjustment of each channel.
Model Rating
Type | Stereo power amplifier |
Rated output (continuous sine wave) | 120W + 120W (4 Ω) 80W + 80W (8 Ω) |
Output load impedance | 4 Ω, 8 Ω |
Rated power band | 20 Hz to 20 kHz |
Dynamic head room | 1.6dB |
Frequency characteristic | 20 Hz ~ 20 kHz + 0 -0.25 dB 10 Hz ~ 100 kHz + 0 -3dB |
Total harmonic distortion factor | 0.005% or Less (250 mW ~ Rated Output, 20 Hz ~ 20 kHz, When Both Channels Are Driven) |
Cross modulation distortion factor | 0.005% (20 Hz to 20 kHz, both channels driven, per channel, when the instantaneous peak is less than twice the rated output) |
Signal-to-noise ratio | 110 dB (below rated output) |
Input sensitivity | 0.8 V (2.5 V, level control center click position) |
Input impedance | 10k Ω |
Damping factor | 100 or Less (4 Ω) 200 or Less (8 Ω) |
External dimensions | Width 445x Height 92x Depth 445 mm |
Weight | 10.9kg |