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MC1.25KW 1-Channel Solid State Amplifier
 
1,200 Watt Quad Balanced Monoblock
Redesigned from top to bottom
Autoformer™, Power Guard®, Sentry Monitor™, Monogrammed Heatsinks™, Solid Cinch™ speaker binding posts
Winner of Stereo Sound Grand Prix 2017
Reference Award
Highly Recommended
 
The MC1.25KW Quad Balanced Power Amplifier is one of our most advanced amplifiers. Redesigned from top to bottom, it replaces the venerable MC1.2KW as our most powerful single chassis monoblock amplifier. A simple glance at this 158 pound (71.7 kg) amp is enough to convey its power and performance capabilities, but when you hear it – then you’ll truly understand what it can do.
 
The MC1.25KW outputs 1,200 Watts of pure power into a single channel with a nearly imperceptible total harmonic distortion of 0.005%. This astonishing amount of power is fully available to 2, 4 or 8 Ohm speakers via our Autoformer™ technology. A pair of these amps can anchor a home audio system that can rival nearly any stereo system in the world.
 
The MC1.25KW is a fantastic amplifier with "unlimited dynamics, crushing power, accuracy, speed, authority, precise control, purity and transparency." Recipient of Reference Award. - Hi-Fi Voice
 
Updates and enhancements abound in the MC1.25KW. A 50% increase in filter capacity improves the performance of low end frequencies as well as increasing dynamic headroom. The top of the amp showcases an updated yet unmistakable McIntosh industrial design that will fit right in with current McIntosh products or those made decades ago. The audio Autoformer and power transformer remain located just behind the front panel but are now contained in new glass topped enclosures. In between them is new circular glasswork housing the amplifier’s name badge that is adorned with a decorative trim ring.
 
The rear of the unit features 4 of our McIntosh Monogrammed Heatsinks™. Made from high quality materials with excellent thermal conductivity properties, these heatsinks are so efficient at dissipating heat that they warrant bearing the McIntosh “Mc” logo. They connect to advanced high current output transistors that eliminate thermal equilibrium lag time so that the first musical note played sounds just as good as songs played later in your listening session. 
 
The heatsinks are capped with handsome ventilation trim plates. These trim plates and the circular trim ring are made from aluminum and are finished to match the front panel handles.
 
The MC1.25KW will drive most speakers "with divine power and control... [and] a dynamic contrast we have never heard before." Highly Recommended: 6 Stars - Lyd & Bilde
 
The AC receptacle has been repositioned to provide additional clearance so a wider assortment of power cords can more easily be used. All of this sits atop a polished stainless steel chassis which rests on 4 new redesigned feet that feature a chamfered edge. Other updates include an updated power transformer, heavier gauge internal wiring, upgraded circuit components, and the addition of our power management system that will turn the amp off after a set amount of time when no input signal has been detected.
 
Regardless of genre, music "was presented with ease and a silk-smooth refinement," yet the MC1.25KW's "pace, rhythm, and timing were spot on... expertly engineered, skillfully assembled, full of top-quality parts, and made of some of the best materials available... Enthusiastically recommended!" - SoundStage Ultra
 
Specifications
 
Electronic Specifications
FTC Power Output Rating
1200 W
Power Output per Channel
1200 W into 2, 4 or 8 ohms
Number of Channels
1
Total Harmonic Distortion
0.005%
S/N below rated output
Balanced: 124dB
Unbalanced: 120dB
Dynamic Headroom
2.2dB
Damping Factor
>40 Wideband
Rated Power Band
20Hz to 20kHz
Frequency Response
+0, -0.25dB from 20Hz to 20kHz
+0, -3dB from 10Hz to 100kHz
 
Control
Remote Power Control
Yes
Multi-Channel DB25 Cable
N/A
 
General Specifications
Circuit Configuration
Quad Balanced
Circuit Design
Solid State
Mono Bridge
N/A
Mono Parallel
N/A
Output Type
Autoformer™
Meters
Yes
Meter Light Switch
Yes
Balanced Input
1
Front Panel
1/2" Glass with handles
Illumination
Direct LED
Chassis Style
Polished stainless steel & black painted steel
 
Connectivity
Speaker Binding Post Type
Patented Solid Cinch™ Speaker Binding Posts
 
Weights & Dimensions
Unit Dimensions (W x H x D)
17-3/4" (45.09cm) x 12-5/16" (31.27cm) (including feet) x 22" (55.88cm) (including the front panel and cables)
Unit Weight
158 lbs (71.7 kg)
Shipping Weight
184 lbs (83.4 kg)