Marantz MR-71
This archive lists the MR-71 under Marantz, but no documentation of a Marantz-branded MR-71 has turned up. Every period reference to the model in the source material points elsewhere, to the McIntosh MR71, the celebrated FM-stereo tuner of the mid-1960s.
An equipment listing in Audio (August 1964, p.39) described the McIntosh MR71 as having a cascode front end, five IF stages, two audio stages, a meter tuning indicator, a 2.5-volt output, and frequency response rated ±0.5 dB. The same page also listed an FMX-9 and an SCT-3A stereo FM tuner. Their brand heading is cut off in the surviving text, which could explain a crossed attribution somewhere down the line.
The MR71's reputation outlasted its era. A Sumo advertisement in Audio (October 1988, p.38) named it, together with the Marantz Model 10B and the Sequerra, as one of the finest tuners ever introduced. A classified listing in Audio (June 1985, p.186) offered an "MR-71 w/cabinet" right alongside other used McIntosh components - MC-75s, an MI-3 audioscope, an MC-225, and an MR-77.
No specifications are documented for a Marantz MR-71. If such a unit exists as a separate product, the record is silent.
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