McIntosh MAC-1900 Vintage Receiver - Near Mint

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This is one of the best preserved versions of this versatile and legendary receiver from McIntosh.  Fully tested and working as it should. 

While there are many of these wonderful receivers available on the market, this is by far the best condition we have ever seen - both inside and out.

The finish quality, paint, glass, and chrome pieces are all in superb condition.  Not an easy feat considering its age and total weight!

It came to us from a single owner that bought it new back in 1972 (47 years ago).

This is a full-featured receiver able to connect a plethora of devices including two turntables!

This was fully tested on our workbench where it passed with flying colors.  Distant radio stations were precisely tuned without issue. And the sound quality - while appearing vintage and warm - was still precise and accurate.

Click here for a PDF copy of the original MAC-1900 Owner's Manual

Click here for a PDF copy of the original MAC-1900 "If You're a Hurry" Guide

Click here for a PDF copy of the original MAC-1900 Service Manual

Our Testing Process for Receivers (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 receiver 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 receiver 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 receiver 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 receivers will then move into our listening room where they are tested with our in-house reference speakers of choice.

Specifications:
Tuning range:  FM, AM
Power output:  55 watts per channel into 8Ω (stereo)
Frequency response:  20Hz to 20kHz
Total harmonic distortion:  0.2%
Damping factor:  50
Input sensitivity:  2mV (MM), 250mV (line)
Signal to noise ratio:  76dB (MM), 90dB (line)
Output:  250mV (line)
Speaker load impedance:  4Ω to 16Ω
Semiconductors:  3 x IC, 53 x transistors, 39 x diodes, 4 x thyristors
Dimensions:  15.99" x 5.51" x 15" (406 x 140 x 381mm)
Weight:  33 lbs. (14.97kg)
Finish:  Black and gold anodized front
Year: 1972-1975

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