Stereo Integrated Amplifier PM-4

A stereo integrated amplifier in Marantz's 'Esotec' Series of hi-fi separates. Power output of 2 x 60 watts Class AB or 2 x 15 watts Class A, into 8 ohms. Terminals for 2 pairs of loudspeakers, System 1 and System 2. Input RCA Sockets for Phono 1 (MM/MC) and Phono 2 (MM), Tuner, TV/Aux, input and output RCA sockets for 2 Tape recorders and three AC Outlets. Rotary controls for Bass, Treble, Volume/Balance, push buttons for Power, Speakers 1 and 2, Class A, Loudness, Subsonic filter, switches for Tone Defeat (On, Off), Tape Copying and Monitoring, Mode (Mono, Stereo, Reverse)  and a rotary Selector switch (Phono 1 (MC or MM), Phono 2, Tuner, TV/Aux). Jack for headphones.

Specification
Power Output per channel ..............:  63 watts rms into 8Ω THD 0.03%
 (20Hz-20kHz)                                 :  73 watts rms into 4Ω THD 0.06%
                                   Class A ........:  15 watts rms into 8Ω THD 0.03%
Power Bandwidth ...........................:  10Hz - 40kHz
Intermodulation Distortion, 8Ω .......:  0.02%
Input Sensitivity/Impedance :
                                   MM ..............:  2.5mV/47kΩ
                                   MC ..............:  220µV/100Ω
                                   Line .............:  150mV/25kΩ
Frequency Response .....................:  7Hz - 60kHz ± 1dB
Signal to Noise ratio   MM...............:  86dB
                                   MC...............:  64dB
                                   Line .............:  100dB
Speaker Impedance : System 1 .....:  4-16Ω per speaker
                                   System 2......:  4-16Ω per speaker
                                   System 1+2 .:  8-16Ω per speaker
Power Consumption .......................:  250 watts

Version/Power Requirements
110/120/220/240 V AC 50-60Hz with Voltage Selector

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