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McIntosh MC501 Monoblock Power Amplifiers

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Original price $11,000.00 (26% Off Est. Retail)
Original price From $8,099.00
Original price $11,000.00 (26% Off Est. Retail)
Current price $8,099.00
From $8,099.00
Current price $8,099.00

+$499.00 Shipping to contiguous US.
Tax collected at checkout.

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Shipping within the Continental USA is $499.00—this includes securing to a pallet with adequate protection and shipping via FedEx Freight to a residential address anywhere in the Continental USA. This rate can be reduced by $60 if a commercial delivery address is available or if the item can be picked up at the nearest FedEx Freight depot. FedEx Freight charges a residential delivery fee otherwise, which is included in our flat rate charge.

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Product Highlights

Matched pair with consecutive serial numbers WU2341 and WU2342, from the same production generation.

McIntosh MC501 Monoblock Power Amplifiers deliver an authoritative continuous output of 500 watts into 2, 4, or 8 ohm speaker loads, supported by peak current capability exceeding 100 amperes. Built around fully balanced quad-differential circuitry, this monoblock pairs two matched amplifier stages in push-pull operation through proprietary output autoformers to cancel noise while safeguarding delicate driver loads. The amplifier utilizes intelligent Power Guard technology to continuously prevent harsh waveform clipping, ensuring clean dynamics and safe operation during intense crescendos. Its physical architecture remains remarkably practical, pairing balanced XLR and single-ended RCA inputs with a shallower chassis depth that accommodates standard equipment racks far more easily than traditional high-current monoblocks.

Audiophiles and professional reviewers consistently praise the MC501 for its effortless, muscular low end and remarkably non-fatiguing, natural tonal balance. The consensus highlights its vanishingly quiet background and smooth presentation, allowing micro-details and orchestral nuances to unfold without sterile or aggressive edges. Long-term owners consistently laud its bulletproof reliability, cool operational temperatures, and steadfast stability across demanding or low-impedance loudspeaker loads. Its reputation as an iconic reference rests on its ability to combine brutal dynamic control with genuine acoustic finesse.

Investing in a pair of these amplifiers unlocks the ultimate headroom, allowing demanding loudspeakers to perform with unrestrained depth, visceral realism, and uncompromised musical elegance.
Brand McIntosh
Type Power Amplifiers
Component Color Black
MSRP $11,000.00
SKU # 102331
Serial # WU2341 / WU2342
Cosmetic Rating

7 - Good cosmetic condition with some minor visible cosmetic wear including scratches on the front and side edges of the faceplates, blemishes on the top and sides of the chassis, and blemishes on the transformer boxes. Despite these cosmetic imperfections, these amplifiers still sound beautiful and would make a great addition to any setup.

Functional Notes

Operational condition of this item is excellent, fully tested and no issues found.

Age 15 years or older
Owners Unknown
Service History Both amplifiers have been serviced by Audio Classics.

Pair of amplifiers, Manual, Pair of power cable, Factory packaging

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McIntosh MC501 Monoblock Power Amplifiers
McIntosh MC501 Monoblock Power Amplifiers