RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
This product is being sold with no manufacturer's warranty, as we are no longer a McIntosh and Sonus Faber dealer.
Paragon fully stands behind rating quality and functionality upon delivery .
The MI347 7-Channel Digital Amplifier is a dedicated home theater amplifier that delivers an immersive sonic experience that provides a heart-stopping, edge-of-your-seat audio experience in the comfort of your home theater. It uses highly sophisticated closed loop digital switching amplifiers that are paired with extremely robust power supplies that produce audio performance levels rarely heard in home theaters.
OVERVIEW
Great Condition Ex-Demo McIntosh MI347 Multi-Channel Amplifier
Original boxes and packaging, power cable
Rated 8/10 for cosmetic wear consistent with age and use
SPECIFICATIONS
•
Type: 7-channel digital power amplifier
•
Amplifier Design: Closed-loop digital switching / Class D
•
Channels: 7
•
Front Channels: 250 W × 3 into 8 Ω; 300 W × 3 into 4 Ω
•
Surround Channels: 125 W × 4 into 8 Ω; 200 W × 4 into 4 Ω
•
Frequency Response: +0, −0.9 dB from 20 Hz–20 kHz
•
Total Harmonic Distortion: 0.025% maximum
•
Signal-to-Noise Ratio: 100 dB below rated output
•
Dynamic Headroom: 2.5 dB (8 Ω); 3.5 dB (4 Ω)
•
Damping Factor: >85 (8 Ω); >45 (4 Ω)
•
Balanced Inputs: 7 × XLR
•
Unbalanced Inputs: 7 × RCA
•
Speaker Outputs: 7 × standard McIntosh binding posts
•
Input Impedance: 32 kΩ balanced; 18 kΩ unbalanced
•
Voltage Gain: 25 dB
•
Protection: Power Guard® and Sentry Monitor™
•
Thermal Protection: Yes
•
Power Control: 12 V output / 5–15 V input
•
Signal Sensing: Automatic on/off signal sensing
•
Rack Mountable: Yes, 3U
•
Rack Ears: Removable
•
Front Panel: Black glass with illuminated McIntosh logo and channel-status LEDs
•
Dimensions: 17.5" W × 6.06" H × 21" D
•
Width with Rack Ears: 19"
•
Weight: 32.5 lb (14.8 kg)
•
Power Requirements: 100–240 V, 50/60 Hz
ADDITIONAL INFORMATION
Please call 734.662.3595 and ask for Richard if you have any questions about this product.
We make every effort to update our ads quickly when inventory fluctuates, but we encourage you to call and check product availability, as we are also a brick and mortar store.
Generating expert take…
McIntosh Laboratory, founded in 1949 in the United States by Frank H. McIntosh and Gordon Gow, embodies a storied heritage of American audio innovation. Originally based in Silver Spring, Maryland, before relocating to Binghamton, New York, where products are still handcrafted today, the brand emerged from a commitment to superior sound reproduction. From powering President Lyndon Johnson's inauguration to the Grateful Dead's Wall of Sound at Woodstock, McIntosh has shaped pivotal moments in music history and pop culture, earning its place as a cultural icon.
The company specializes in a comprehensive lineup of high-fidelity components, including renowned amplifiers—particularly its revered tube models for their warm, enveloping sound—along with solid-state power amps, stereo tuners, loudspeakers, turntables, music streamers, processors, and digital-to-analog converters. This breadth supports both two-channel stereo systems and multi-channel home theaters, delivering immersive experiences in music and film. Iconic blue watt meters on their gear have become globally recognized symbols of precision and power.
Positioned firmly in the high-end market, McIntosh commands respect among discerning audiophiles for its uncompromising quality, luxurious build, and timeless design. Far from mid-tier or niche boutique, it stands as a premium benchmark, favored by legendary musicians and producers across decades, blending vintage allure with modern performance for those who demand the ultimate in sonic fidelity.
See all McIntosh listings on RADAR.
