McIntosh MC2250 (1982–1987)

Name: McIntosh MC2250
Brand: McIntosh

Only 499 were made. It shares its DNA with the MC2255, and it can still drive demanding speakers.

Overview

An MC2250 weighs 80 pounds and comes in chrome, black steel, and anodized gold. It isn't one of McIntosh's glass-fronted models with glowing meters. It's a stripped-down, industrial-grade amp built for real work. Despite the plain looks, it has that McIntosh warmth - smooth, rich, and in control, even on loads that would make lesser amps whimper.

McIntosh made just 499 units between 1982 and 1987. The MC2250 was never meant for the average living room. It was generally designed for the commercial market, which explains the rack-mountable chassis, the rugged build, and the no-nonsense front panel. No glass and no meters, but owners report it still delivers that "typical McIntosh warm sweet sound," even under the harshest conditions. It's been called a "brute" and a "massive powerhouse," and one forum user put it simply: "The 3a's love him," referring to the notoriously hard-to-drive Acoustic Research AR-3a speakers.

It's a rare, limited-run sibling of the highly regarded MC2255. It shares the core engineering but is tailored for professional and high-demand applications. At launch it cost $2,495, which was a serious investment at the time, equivalent to a luxury car. Today it's a collector's item for its scarcity and as an example of McIntosh's 1980s solid-state design.

Specifications

Manufacturer	McIntosh
Model	MC2250
Product Type	Stereo Power Amplifier
Year of Production	1982–1987
Power Output Stereo	250 watts minimum sine wave continuous average power output, per channel, both channels operating into 1 ohm, 2 ohms, 4 ohms, or 8 ohms load impedance
Power Output Mono	500 watts minimum sine wave continuous average power output into 0.5 ohm, 1 ohm, 2 ohms, 4 ohms, 8 ohms, or 16 ohms load impedance
Output Load Impedance Stereo	1 ohm, 2 ohms, 4 ohms, and 8 ohms; separate terminals are provided for each output
Output Load Impedance Mono-Parallel	0.5 ohm, 1 ohm, 2 ohms, and 4 ohms; obtained by connecting together the appropriate terminals of both channels
Output Load Impedance Mono-Bridged	2 ohms, 4 ohms, 8 ohms, or 16 ohms, balanced to common connections
Rated Power Band	20 Hz to 20,000 Hz
Total Harmonic Distortion Stereo	0.02% maximum harmonic distortion at any power level from 250 milliwatts to 250 watts per channel from 20 Hz to 20,000 Hz, both channels operating
Total Harmonic Distortion Mono	0.02% maximum harmonic distortion at any power level from 250 milliwatts to 500 watts from 20 Hz to 20,000 Hz
Intermodulation Distortion Stereo	0.02% maximum if instantaneous peak power output is 500 watts or less per channel with both channels operating for any combination of frequencies, 20 Hz to 20,000 Hz
Intermodulation Distortion Mono	0.02% maximum if instantaneous peak power output is 1000 watts or less for any combination of frequences, 20 Hz to 20,000 Hz
Frequency Response (at one watt output)	20 Hz to 20,000 Hz +0 -0.25 dB. 10 Hz to 100,000 Hz + 0.25 - 1 dB.
Noise and Hum	95 dB below rated output
Damping Factor	Greater than 30
Input Impedance	50,000 ohms
Input Sensitivity	Switchable: 0.75 volt or 2.5 volts—level control provided for higher input voltages
Power Guard	Clipping is prevented and THD does not exceed 2% with up to 20 dB overdrive at 1 KHz
Power Requirements	120 volts 50/60 Hz 0.7 to 12 amps
Semiconductor Complement	76 silicon transistors, 37 silicon rectifiers and diodes, 9 integrated circuits
Size Front Panel	16 inches wide (40.7 cm) by 6-31/32 inches high (17.7 cm)
Size Chassis	14-9/16 inches wide (37 cm) by 6-1/2 inches high (16.5 cm) by 14-1/2 inches deep (36.8 cm), including connectors. Knob clearance required is 1 inch (2.5 cm) in front of mounting panel
Finish	Front panel is anodized gold. Chassis is chrome and black
Weight	80 pounds (36.3 kg) net, 94 pounds (42.6 kg) in shipping carton

Key Features

Autoformer Output Technology

Like all high-end McIntosh amplifiers of its era, the MC2250 uses Autoformer output transformers. They let it deliver full rated power into any load, whether 1 ohm or 16 ohms. That means the amp doesn't have to work harder into low-impedance speakers, which reduces stress and distortion. It's one of the reasons McIntosh amps are known for driving difficult loads like the AR-3a or Apogee ribbons.

Power Guard and 7-Stage Protection

The MC2250 includes McIntosh's Power Guard circuit, which monitors the signal to prevent clipping. It doesn't just limit peaks, it shapes the waveform in real time. A 7-stage implementation keeps total harmonic distortion under 2%, even with 20 dB of overdrive at 1 kHz. It protects the speakers and preserves the signal when the amp is pushed hard. It's also a big reason these amps survive decades of abuse and still sound pristine.

Rack-Mountable Industrial Design

Unlike the domestic models with glass fronts and backlit logos, the MC2250 has vintage cosmetics rather than glass and meters. It's built for 19-inch racks, with a rugged chrome and black chassis and a simple anodized gold front panel. There are no meters and no glowing logos. The dual mono design, massive toroidal transformer, and full discrete circuitry are all hidden beneath that no-frills exterior.

Historical Context

The MC2250 was a rare, limited-production model - only 499 units were ever made - and it was generally designed for the commercial market. It shares its core architecture with the highly regarded MC2255: same power, same precision, but repackaged for studios, broadcast facilities, and high-end commercial installations. Its scarcity likely comes from its niche role, not poor sales. It never appeared in mainstream McIntosh brochures, which may explain why it's less known than its siblings.

Collectibility & Value

With only 499 ever produced, the MC2250 is a genuine rarity. A unit listed on Audio Exchange sold for $2,249 in excellent physical and working condition, fully tested by a professional technician. Another listing on Reverb showed a price of $2,499 as recently as December 2025, indicating stable demand among collectors and audiophiles.

Because of its age, a proper restoration is often necessary. A full recap of all electrolytic capacitors on all PCBs is considered essential. Check the capacitors for bulging, shrunken wrappers, or leakage, which are telltale signs of predictive failure. One unit was previously serviced by Audio Classics, who adjusted the DC offset pots and performed a routine service. These amps are tough, but they do need expert attention over time.

An optional McIntosh wood cabinet is available as an add-on for $450. A dedicated restoration kit for filter capacitor repair is listed at $195, a small price compared to the amp's value. The parts count is 76 transistors, 37 diodes, and 9 ICs.