MR-65B

About the MR-65B

The McIntosh MR-65B is a vintage stereo FM tuner produced by McIntosh Audio Company from 1962 to 1964. It features an analogue tuning scale covering the FM broadcast band from 87.5 to 108 MHz. The tuner is equipped with 14 tubes and 1 semiconductor, utilizing a superheterodyne design with a 10.7 MHz IF stage. It includes a built-in MX1 multiplex decoder for stereo FM reception. The MR-65B delivers a sensitivity of 2.5 microvolts, distortion less than 0.5%, and a frequency response of 20 Hz to 20 kHz. It outputs 2.5 volts audio signal and has a robust metal chassis measuring approximately 15.6 x 5.1 x 12.2 inches and weighing 22 pounds. The front panel includes volume control, mode selector (ext stereo, mpx stereo, FM, power off), AFC control, muting switch, tuning control, and signal strength and tuning meters. It is highly regarded for its lush, rich sound and stable tuning after warm-up, making it a prized piece among audiophiles and collectors of vintage high-fidelity equipment.