McIntosh MC2255 Amplifier in Gorgeous Condition - 250W x 2

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Here we have the most powerful McIntosh all-glass faceplate amplifier from McIntosh from this era. The MC2300 or MC2500 also from this era were more suited for a concert hall or nightclub because of their industrial look.

The MC2255 features classic McIntosh looks including their famous big blue backlit meters, all-glass faceplate with gold lettering, and a one-of-a-kind countdown LED meter that chronographs a series of safety checks before engaging the speakers!

We spent some time with this monster on the test bench where we calibrated the meter, set the DC Offset, removed the faceplate to clean any dust trapped between the meters and film, and to service any bulbs in need.

Now working perfectly and sounding glorious with that sweet McIntosh sound.

This is the first 2255 to come by our shop since they are bit rare.

Cosmetically it is very good to excellent. The plastic bezel does show a bit of silver paint wear which we can address if you'd like.

Please see our photos or click on the links below for full specifications. 

McIntosh MC2255 Original Sales Brochure

McIntosh MC2255 Owner's Manual

The SkyFi Testing Process for Solid State Amplifiers:

We start with a visual inspection of all internal components to make sure there are no signs of stress or aging. Capacitors are checked for telltale sings of bulging or leaking, resistors are checked for signs of overheating or cracking, and transistors are checked for signs of stress or damage.

We then power up the unit carefully and run a simple 1k sine wave while monitoring the output on an oscilloscope for signs of distortion or noise. Finally, we run the amplifier to its full rated power into the appropriate resistive load provided by our Sencore amplifier tester. If there is an issue, it will usually be noticeable at this point. If everything reads clean, we will often test for THD (Total Harmonic Distortion) measured by our Keithley distortion meter, and compare it against the original manufacturers specifications. The amplifier then remains powered on to "burn in" on our test bench for a few hours to make sure there are no heat related issues. If there are balanced inputs available they will be also be tested.

Final testing involves pushing actual music thorough the amplifier. We've learned over time that some issues are only noticeable to a trained ear while listening to familiar source material. Our test bench has reference vintage KEF speakers that we're very familiar with which quickly reveal any discrepancies. Some amplifiers will then move into our listening room where they are tested with our in-house reference speakers of choice.

Please click here for detailed specifics regarding our specialized packing process that separates us from the rest.