Mcintosh MC2505 Vintage Amplifier in Amazing Vintage Condition


Here we have a super clean MC2505 amplifier, recently into in our shop, working and running as it should after testing in our lab and listening room.

Expect great vintage warm McIntosh sound as you would from other models from this era. 50W per side is perfect for getting the most out of your high efficiency speakers. 

We were playing period-correct hits from Frank Sinatra and I was personally mesmerized at the spaciousness of his voice against the orchestra. Even at low volume.

This is a very clean example with just about the best chrome finish you can expect. The front glass faceplate is also super clean with only a few blemishes. Again, about the best we've seen. 

Also the front meters are much brighter than other MC2505's we've had at our shop compared to past MC2505's. Even with replacing the bulbs on past models and double-checking voltage from the factory service manual, they were still dimmer than what most of us are used to. This seems to be a later production model as they're really nice and bright.

A matching official vintage McIntosh wood cabinet is available for another $300. Simply simply that option at the bottom of this listing if you want one included.

Some Cosmetic Notes:
• Some light black paint chipping around the headphone jack and other parts of the glass 
• There is a scratch on the top cover plate for the meters.

Click below to add our recommended matching cables from Kimber Kable, all brand new as SkyFi is an official Kimber dealer.

Kimber Kable - RCA Interconnects - Better 

Kimber Kable - RCA Interconnects - Best

Kimber Kable - Speaker Cables - Better

Kimber Kable - Speaker Cables - Best

Kimber Kable - Bi-Wire Speaker Cables Best (If Applicable)

Please see our photos or the linked manual below for full specifications. 

McIntosh MC2505 Stereo Power Amplifier - 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.



Original Box

Not Included


Online Only


Not Applicable


Yes - Power Only

Physical Condition

7 / 10

Working Condition

10 / 10

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