Meet the McIntosh MI347, a powerful 7-channel digital amplifier built for discerning home theater enthusiasts. It delivers robust power exactly where your movies and music need it most—3 front channels push up to 250 W into 8 Ω (300 W into 4 Ω), while 4 surround channels offer 125 W into 8 Ω (200 W into 4 Ω). Thoughtfully engineered with fanless Class D design and quiet cooling vents, the MI347 runs cool and reliable. Its clean front panel with LED indicators, flexible input options, and smart power controls let you enjoy rich sound with minimal hassle.
Key Features
- High-power 3 front channels (250 W @ 8 Ω / 300 W @ 4 Ω) for clear dialogue and dynamic effects
- Four surround channels delivering 125 W @ 8 Ω (200 W @ 4 Ω) for balanced surround sound
- Quiet, efficient Class D design with top and side vents—no cooling fans needed
- Power Guard® and Sentry Monitor™ technologies protect your speakers and gear
- Both balanced and unbalanced inputs per channel; standard 5-way binding posts ensure solid connections
- 3U rack-mountable chassis with removable brackets and elegant black glass front
- Smart power control and eco-friendly signal sensing—powers on/off automatically
Why Buy
The MI347 is built for those who expect reliability, refined performance, and thoughtful design in their home theater setup. It brings power and protection in a sleek package that fits any serious audio system.
- Strong, focused audio performance across all channels
- Quiet and reliable operation with protective circuitry
- Effortless integration into racks or display systems with elegant styling
Product Specifications
| McIntosh MI347 7-Channel Digital Amplifier Specifications | |
|---|---|
| Product Overview | |
| Amplifier Type | 7-Channel Class D Digital Amplifier |
| Power Output (Front Channels) | 250W into 8Ω / 300W into 4Ω (3 front channels) |
| Power Output (Surround Channels) | 125W into 8Ω / 200W into 4Ω (4 surround channels) |
| Channels | 7 |
| Impedance | 4Ω and 8Ω compatible |
| Frequency Response | 20 Hz – 20 kHz (+0 / -0.5 dB) |
| Audio Specifications | |
| THD (Total Harmonic Distortion) | 0.025% maximum at rated power |
| S/N Ratio | Greater than 100 dB |
| Inputs | 7 Balanced (XLR), 7 Unbalanced (RCA) |
| Outputs | 7 Speaker outputs via gold-plated 5-way binding posts |
| Connectivity | |
| Trigger Inputs/Outputs | Yes (for system power control) |
| Rack Mountable | Yes (3U height, with removable mounting brackets) |
| Power and Cooling | |
| Power Supply | 120V 50/60Hz, 230V 50/60Hz, factory set |
| Standby Power Consumption | < 0.5W (Energy-saving mode) |
| Cooling | Passive (fanless, vented chassis design) |
| Dimensions (H x W x D) | 5.4" x 17.5" x 21" (13.7 cm x 44.5 cm x 53.3 cm) |
| Weight | 27 lbs (12.2 kg) |
| Additional Features | |
| Front Panel | Black Glass with LED indicators |
| Protection Technologies | Power Guard®, Sentry Monitor™ |
| Finish | Black painted steel with glass front panel |
| Warranty | |
| Warranty | 3 Year Limited Warranty |