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Superscope R-1270

AM/FM Stereo Quadraphase Receiver (1976-77)

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Superscope R-1270


Tuning range: FM, MW

Power output: 35W/ch (stereo)

Frequency response: 15Hz to 70kHz

Total harmonic distortion: 1%

Damping factor: 44

Input sensitivity: 2.8mV (MM), 180mV (line)

Channel separation: 56dB (line)

Dimensions: 122 x 430 x 287mm

Weight: 9.6kg

Year: 1976


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re: R-1270

This is 35wpc. Amp section is based on Marantz 1070.

rlisin's picture

re: R-1270

There are similarities with both Marantz 1070 and Marantz 2235. But: Superscope R-1270 and Marantz 2235 have the same output transistors, Marantz 1070 has different output transistors, so it's probably closer to 2235.

Adjustment procedure (DC offset, idling current) is basically the same for all three, but note that the emitter resistors in Superscope R-1270 have a different value than in Marantz 1070 and 2235, so the voltage measured across them should be corrected accordingly.

re: R-1270

Superscope are using a TA7129P IC for phono . Only Marantz 2215B (and not 2215 or 2235 or 1070) are using same IC. That TA7129P are rare item today. Happily I have a few extra if someone need.

rlisin's picture

re: R-1270

That IC is in Marantz 2216 too. But yes, looks like the R-1270's preamp, tuner and phono stage are borrowed from Marantz 2215B.

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