McIntosh MC-2205 - 200W of American Muscle - Fully Serviced One of Mcintosh’s most popular amplifiers from the 1970’s. Built like a tank and sure to last 100+ years. Still relevant to today’s 200W amplifiers, and a solid reliable performer with a wonderful typical sweet McIntosh sound. Mechanically this unit is in absolutely perfect condition. It was serviced years ago (see photo of receipt) to the tune of $580 and has had little use since. Cosmetically it’s not perfect, but we believe the new owner would be pleased. There are a few scratches, some slight chrome pitting, and some imperfections in the glass. However it’s quite nice for its age. Click here for a PDF copy of the MC2205 Owner's Manual Specifications: ELECTRICAL: 200w/ch. (400w mono). Response 20-20kHz (+0 -0.25dB). Distortion 0.1%. Noise and hum -95dB. Output impedance 1, 2, 4 and 8 ohms. (0.5, 1, 2, and 4 ohms in mono). Damping factor 16 or greater. Input impedance 100k. Input sensitivity 0.75v or 2.5v. Headphone impedance: low. Sentry Monitor. Power Guard. FRONT PANEL: Glass panel with black & gold escutcheon. Illuminated. Power level meters (linear watts or dB). Gain controls. Meter range sw: -20, -10, 0, watts and hold. Output mode lamps: normal or limit. Meter function lamps: watts, hold or decibels. Speaker sw: on or off. Power sw: on or off. Headphone jack. BACK PANEL: Output barrier strips. Audio inputs. AC outlet. Input level sw: 2.5v or .75v. Mode sw: stereo or mono. Fuse. Panloc mounting. Size: 7-1/8"H, 16-3/16"W and 14-1/2"D. Weight: 85 lb. Sold from: 1975-1979 Our Testing Process for Amplifiers (Solid State) at SkyFi: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. Item Included Original Box No Manual Online Remote N/A Cables Yes - Power Physical Condition 7 Working Condition 10
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