Marantz Model 105B
The Marantz Model 105B is an AM/FM stereo tuner from the 1970s. It is the standalone tuner version of the Marantz Model 2015 receiver and shares nearly all of that model's circuitry. Only the audio amplifier and power supply sections are left out. It was designed to pair with Marantz integrated amplifiers of the era, such as the 1060, 1070, and 1090 series.
The front panel has an analog dial with a tuning meter, and a Gyro-Touch tuning wheel for station selection. Push-button switches handle FM, AM, mono, and muting. Around back are an AM rod antenna and FM and AM antenna terminals. It measures 360×120×280 mm, weighs 5.5 kg, and has a silver faceplate.
The technical record is thin. No sensitivity figures, frequency response, THD, or other performance specs have turned up in the documentation available to us. The service manual confirms the Model 2015 lineage, but detailed circuit analysis beyond that isn't part of the public record. Production dates are also approximate. A 1974 date is sometimes attached to the model, and it's generally placed in the 1970s.
Collectors still seek it out. Vintage hi-fi enthusiasts want the 105B as a quality radio component for period-correct Marantz systems, and original service manuals and handbooks still circulate among sellers.
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