McIntosh MI347
McIntosh MI347 7-channel power amplifier, dedicated to demanding multichannel home cinema installations.
Description
The MI347 is a 7-channel power amplifier from McIntosh, designed specifically for Home Cinema installations. It delivers 125 Watts per channel into 8 Ohms, or 200 Watts into 4 Ohms, enough to simultaneously power all the speakers in a multichannel configuration.
The unit relies on digital switching amplification modules operating in a closed loop, paired with power supplies described as particularly robust. This architecture aims to deliver a high level of performance while maintaining a compact format compared with traditional analogue amplification of equivalent power. Behind a sober, uncluttered fascia, McIntosh has focused its attention on the internal circuitry rather than on external aesthetics.
The MI347 is designed to work with the McIntosh MX100 Home Cinema processor, both units being designed for rack installation. It also remains compatible with the brand's MX123 and MX170 processors, as well as with most audio/video processors on the market, making it a flexible amplification component within an existing multichannel system.
This model is aimed at home cinema enthusiasts wishing to equip a complete multichannel installation with a single, consistent amplification source, particularly those who already own a McIntosh processor or are considering pairing one with their system. The rack format makes it easy to integrate into a dedicated equipment rack.
Technical specifications
| Number of channels | 7 |
| Power | 125 W into 8 Ohms / 200 W into 4 Ohms |
What to check before buying used
With this type of multichannel power amplifier, it is best to test all 7 channels simultaneously under load, as a closed-loop amplification module can degrade without any suspicious noise or obvious warning light. Also check the condition of the speaker connectors and inputs, and ensure there is no hum or thermal cut-out after a few dozen minutes of continuous use. The internal cooling and power supply, put under strain by the unit's compact format, deserve particular attention if the unit has seen heavy use in a home cinema setup.
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