McIntosh MC257
McIntosh 7-channel power amplifier delivering 200 W per channel, designed to power a complete seven-speaker Home Cinema installation.
Description
The McIntosh MC257 is a power amplifier dedicated to multichannel audio installations. It provides the amplification stage needed to power up to seven separate speakers, working alongside a preamplifier or Home Cinema processor that handles the source and channel decoding.
This model delivers 200 Watts on each of its seven channels when operating simultaneously, giving a total power output of 1,400 Watts. This configuration allows all the speakers in a multichannel system to be powered without resorting to several separate amplifiers. Its harmonic distortion remains very well controlled, with a maximum variation of 0.005 % across the entire audio band, a level of linearity reflecting precise signal control at each amplification stage.
Weighing close to 43 kilograms, the MC257 falls into the category of substantial power amplifiers, designed for a fixed installation rather than portable or temporary use.
This type of amplifier is aimed at those building a seven-speaker Home Cinema installation, alongside one or more active subwoofers. It suits configurations where each channel requires an identical, sufficient power reserve to reproduce dialogue, effects and ambience without signal compression.
Technical specifications
| Power | 7 x 200 W (1,400 W total) |
| Weight | 43 kg |
What to check before buying used
Check that all seven channels function correctly at the same time, as an imbalance or an occasional dropout on one stage may indicate tired output transistors. The protection relays and large power supply capacitors deserve particular attention after several years of service, as does the condition of the input connectors and speaker terminals at the rear. Given its weight, also examine the feet and the ventilation of the cabinet intended to house it.
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