McIntosh MC901 Dual Mono Amplifier

McIntosh has been perfecting vacuum tube amplifiers since the 1940s and solid state amplifiers since the 1960s. Their amplifiers have been used at many historic events including presidential inaugurations and Woodstock, as well as in landmark sound systems like the Grateful Dead's Wall of Sound and Despacio.

From that heritage comes a truly one-of-a-kind home audio amplifier only McIntosh could dream of, designed and built as the ultimate solution for bi-amping loudspeakers: the McIntosh MC901 Dual Mono Amplifier.

Specification:

• Power Output per Channel: Solid State section: 600 Watts @ 2, 4 or 8 Ohms; Vacuum Tube section: 300 Watts @ 2, 4 or 8 Ohms
• Number of Channels: 1
• Total Harmonic Distortion: Solid State section: 0.005% maximum harmonic distortion at any power level from 250 milliwatts to rated power, 20Hz to 20,000Hz; Vacuum Tube section: 0.5% maximum harmonic distortion at any power level from 250 milliwatts to rated power, 20Hz to 20,000Hz
• S/N below rated output: Solid State section: 122dB; Vacuum Tube section: 112dB
• Dynamic Headroom: Solid State section: 2.5dB; Vacuum Tube section: 1.2dB
• Damping Factor: Solid State section: >40; Vacuum Tube section: >18
• Rated Power Band: Solid State section: 20Hz to 20kHz; Vacuum Tube section: 20Hz to 20kHz
• Frequency Response: Solid State section: +0, -0.25dB from 20Hz to 20,000Hz, +0, -3dB from 10Hz to 100,000Hz; Vacuum Tube section: +0, -0.5dB from 20Hz to 20,000Hz, +0, -3dB from 10Hz to 70,000Hz
• Remote Power Control: Yes
• Multi-Channel DB25 Cable: N/A
• Speaker Binding Post Type: Patented Solid Cinch™ Speaker Binding Posts
• Circuit Configuration: Solid State section: Quad Balanced; Vacuum Tube section: Unity Coupled
• Circuit Design: Solid State and Vacuum Tube
• Mono Bridge: No
• Mono Parallel: No
• Output Type: Solid State section: Autoformer™; Vacuum Tube section: Unity Coupled Output Transformer
• Meters: DualView™ Power Output Meter
• Meter Light Switch: Yes
• Balanced Input: 3 (1 Solid State, 1 Vacuum Tube, 1 Composite)
• Front Panel: Glass
• Illumination: Direct LED
• Chassis Style: Polished stainless steel & black painted steel
• Dimensions (W x H x D): 17-1/2" (44.45cm) x 13-1/4" (33.7cm) (including feet) x 29-1/2" (74.9m)
• Weight: 180 lbs (81.6 kg); Shipping Weight 200 lbs (90.7 kg)

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