Type: Single-channel, solid-state, Quad Balanced monoblock power amplifier
Power Output: 1,200W into a single channel, fully available at 2, 4, or 8 ohms via McIntosh Autoformer technology
Total Harmonic Distortion: 0.005%
Circuit Design: Quad Balanced architecture — same signal fed to two 600W power modules per channel, one inverted, for fully balanced operation from input to output
Filter Capacity: 50% increase over predecessor (MC1.2KW), enhancing low-end frequencies and dynamic headroom
Protection: Power Guard (real-time anti-clipping protection), Sentry Monitor (fuse-less short-circuit protection with automatic reset)
Metering: 11" fast-responding blue Watt meter per unit
Construction: Updated McIntosh industrial design, glass-topped Autoformer and power transformer enclosures, four McIntosh Monogrammed Heatsinks with advanced high-current output transistors
Power Management: Automatic power-down after set period without input signal; Power Control link for other McIntosh components
Connections: Solid Cinch speaker binding posts, repositioned AC receptacle for wider power cord compatibility
Weight: 158 lbs each
Condition: Excellent
Includes: Original boxes (2)
Summary: Up for sale is a matched pair of McIntosh MC1.25KW monoblock power amplifiers, in excellent condition and complete with both original boxes. As McIntosh's most powerful single-chassis monoblock, the MC1.25KW replaces the venerable MC1.2KW with a full top-to-bottom redesign, delivering a massive 1,200 watts per channel with vanishingly low distortion, fully available regardless of speaker impedance thanks to McIntosh's proprietary Autoformer output technology. Quad Balanced circuitry, increased filter capacity, and upgraded internal components combine to deliver exceptional dynamic headroom, control, and a warm, smooth, refined sound praised by reviewers for its authority and effortless power. Iconic McIntosh styling — the glass-topped Autoformer housing, illuminated blue meter, and polished stainless chassis — makes this pair as visually commanding as it is sonically capable. A true flagship-tier monoblock setup for anchoring the most demanding high-end two-channel or home theater system. Shows excellent condition on both units with no notable wear.
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