For your consideration, we have the classic Mcintosh MC 2105 Power Amplifier for sale. The unit is in very good physical condition, and in perfect working order. Physically, the glass is in very good condition with only a few small bubbles, and around the headphone jack. The knobs show some blemishes, but overall are in very good condition. The trim pieces have some scratches as can be seen in the photos. The sides, top and bottom of the amp are all in very good shape with some blemishes. The back of the amp has some pitting, with some rust around the fuse holder, which is typical on these units. Overall it's a great looking piece.
The unit has been serviced. All pots and switches were cleaned, and then treated with Deoxit F5 and D5 respectively. We replaced the Meter bulbs with LED, and used incandescent bulbs on the Wording lights. The previous owner had the amp completely gone through and recapped, including the main filter capacitors, so there was no need to do any work on the boards. We set the bias on the amp, and the meters were calibrated to factory specifications.
In order to test the output and check to see the amp was in proper working order, we hooked it up to our Sencore PA81 Stereo Stereo Power Amplifier Analyzer acting as a dummy load and Oscilloscope interface. Using an audio generator, we ran a 1k signal through the amps input, slowly increasing the amplitude
while monitoring the output on our oscilloscope for signs of noise, clipping, distortion, or improper channel balance. It checked out perfectly, and the amp easily produced a clean 105 watts per channel on our bench. Following the work performed on the unit, it spent time on our bench, and then in our house system for about a week running daily for 8 hours a day. It performed flawlessly.
The MC 2105 will ship in a new Mcintosh MC 2105 factory box.