top of page


A good tuner is hard to find, even as a separate. A great tuner such as the MR85 is truly rare, and will let you rediscover the pleasures of radio. The MR85 is a thoroughly engineered broadcast monitor that reveals the upper limits of AM/FM performance. By adding the TM1 Tuner Module the MR85 becomes two great tuners that operate independently – perfect for multizone applications.



Featured Technologies


DUAL-TUNER OPERATION.  As an expansion option, an independent TM1 Tuner Module may be added by a McIntosh dealer. This is ideal for multizone systems, because it creates two tuners that can be used simultaneously. The optional TM1 is the most economical way to add a second high-performance tuner to any McIntosh system


WEIGHTED FLYWHEEL FOR MANUAL TUNING. Reminiscent of the smooth-acting flywheel found in classic McIntosh tuners, the MR85 features a new, optically encoded weighted flywheel for “dialing in” stations.


CUSTOM NAMING. All station presets for each tuner may be labeled with a name containing as many as 8 characters. For example, FM preset 1 could be renamed “ROCK1” or “WKRP.”


IR REMOTE CONTROL. When connected to a McIntosh Control Center, the MR85’s master control microprocessor receives and decodes signals from separate data inputs, one for each tuner. This allows for simultaneous independent remote operation of each tuner.


AUTO-MEMORY OF PREFERRED SETTINGS. Each preset automatically remembers the last setting for the Mono and Spatial functions. Whenever a preset is selected, its preferred setting will be restored.


AUTOMUTE. When manually tuning though the band, the outputs will unmute whenever a suitably strong station is sensed. For distance tuning, Automute can be turned off to allow searching for weak signals. This fine-tuning method recalls the feel of a classic analog tuner.


SPATIALIZER ENHANCEMENT. This circuit can expand the sound field for FM stations that have poor separation, or it can provide a pseudo-stereo effect for AM stations.


DMOS-FET RF AMPLIFIER. This circuit provides very high sensitivity with ultra-low distortion.


DOUBLE BALANCED MIXER. This advanced design improves spurious response rejection and provides better local oscillator isolation.






  • High-performance AM/FM broadcast monitor
  • Expansion option adds second internal tuner
  • New flywheel system for manual tuning
  • Non-volatile memory for 9 FM and 9 AM presets (per tuner)
  • Multifunction alphanumeric fluorescent display
  • Custom naming for each preset
  • Auto-memory of preferred settings for each preset
  • Permanent memory of all settings
  • Automute for distance tuning (defeatable)
  • Remote power control in/out
  • Data in connections for remote operation from McIntosh system remotes
  • Fixed and variable audio outputs
  • McIntosh spatial sound enhancement (Tuner 1)
  • High sensitivity DMOS-FET RF amplifier
  • Double-balance mixer for superior image rejection
  • Ultra-stable, linear phase piezoelectric IF filters for FM and AM
  • Phase Locked Loop FM multiplex decoder
  • Automatic stereo blend on weak FM stereo stations
  • 19kHz pilot and 38kHz carrier suppression for noise-free recordings
  • Adjacent-channel Multiplex Interference Rejection Circuit
  • New AM input circuit with a Faraday-shielded low impedance ferrite rod antenna
  • RAA1 high-performance remote AM antenna included
  • Gold-plated output jacks
  • Modular construction with steel chassis
  • Glass front panel with illuminated nomenclature 


McIntosh MR85 AM/FM Tuner






    Useable Sensitivity

    14dBf (1.4uV across 75Ω)


    50dB Quieting Sensitivity

    Mono:  19dBf (2.4uV across 75Ω)

    Stereo: 35dBf (15uV across 75Ω)


    Signal-to-Noise Ratio

    Mono: 75dB; Stereo: 70dB


    Frequency Response

    Mono:  20Hz to 15kHz, +0 / -1dB

    Stereo: 20Hz to 15kHz, +0 / -1dB


    Harmonic Distortion

    Mono:   0.3% at 100Hz

                  0.3% at 1kHz

                  0.3% at 10kHz

    Stereo: 0.45% at 100Hz 

                 0.45% at 1kHz

                 0.65% at 10kHz


    Intermodulation Distortion

    Mono: 0.25%; Stereo: 0.45%


    Capture Ratio



    Alternate Channel Selectivity



    Spurious Response



    Image Response



    RF Intermodulation



    Stereo Separation

    45dB at 100Hz

    45dB at 1kHz

    35dB at 10kHz


    SCA Rejection







    20uV (external antenna input)


    Signal-to-Noise Ratio

    48dB at 30% modulation

    58dB at 100% modulation


    Harmonic Distortion

    0.5% max. at 50% modulation


    Frequency Response

    50Hz to 6kHz NRSC


    Adjacent Channel Selectivity

    55dB minimum IHF


    Image Rejection

    65dB min., 540kHz to 1600kHz


    IF Rejection

    80dB minimum





    Audio Outputs

    Fixed: 1.2Vrms

    Variable: 10mV to 1.2Vrms


    Output Impedance

    < 100 ohms


    Power Requirements

    100V 50/60Hz, 20W

    120V 50/60Hz, 20W

    230V 50/60Hz, 20W


    Dimensions (h x w x d)

    inch:   6.0 x 17.5 x 18.375

    cm:   15.3 x 44.5 x 46.7



    25.5 lbs. (11.6kg) net

    43 lbs. (19.5kg) shipping

bottom of page