The Marantz 2100 is a stereo tuner that was introduced in the early 1970s, designed to provide excellent radio reception and sound quality. This model features a classic Marantz design with a large, easy-to-read tuning dial and a distinctive blue illuminated dial scale, which is characteristic of the brand's aesthetic. The tuner supports both AM and FM bands and is compatible with a wide range of antenna configurations, allowing for flexibility in setup. Key specifications include a typical sensitivity of around 1.5 µV for FM, a signal-to-noise ratio of approximately 65 dB, and a stereo separation of 40 dB. The 2100 also incorporates features such as a multiplex decoder for stereo FM broadcasting and provisions for auxiliary inputs. Its build quality reflects a solid construction typical of Marantz products from that era, ensuring durability and longevity. Users often appreciate its warm sound signature and ability to pull in weaker stations with clarity, making it a desirable piece for music and radio enthusiasts.