McIntosh MR500

The McIntosh MR500 tuner delivers exceptional FM/AM reception with the clarity and reliability that defined McIntosh's approach to radio tuner design. This tuners exemplifies the engineering philosophy and audio quality that made McIntosh a respected name in the high-fidelity industry.

Specifications

Specification	Value
Tuning Range	87.5-108 MHz (FM), 530-1710 kHz (AM)
Sensitivity	1.8μV (FM), 50μV (AM)
Signal-to-Noise Ratio	75dB (FM), 50dB (AM)
Total Harmonic Distortion	0.3% (FM), 1.0% (AM)
Capture Ratio	1.5dB
Selectivity	70dB
Stereo Separation	40dB
Output Level	500mV
Dimensions	17" × 5" × 12"
Weight	18 lbs

Historical Context

During the 1970s, FM broadcasting reached new heights of quality, and the MR500 was designed to extract the maximum performance from broadcast signals. It became a reference for tuner performance in its price class.

During its production years from 1972-1982, this model competed with other premium audio components of the era and helped establish McIntosh's reputation for quality and performance. Many units remain in service today, a testament to their durability and timeless design.

Design Features

The MR500 incorporates advanced RF circuitry, precision tuning mechanisms, and sophisticated multiplex decoding for stereo FM. Its design emphasizes stable reception, low noise, and accurate signal processing.

The MR500 incorporates several innovative features for its time, including high-quality transformers, precision capacitors, and carefully selected transistors or tubes. Its construction emphasizes both sonic performance and long-term reliability, with attention to details like chassis rigidity, component layout, and thermal management.