Marantz 1090

Maintenance repair

Designed in California and made in Japan 1977

Power amplifier
Power 2 x 45 W, 8 Ohms
Power 2 x 57 W, 4 Ohms
Total harmonic distortion 0.1%
Intermodulation distortion 0.1%
Damping factor at 20 Hz 45
Final input sensitivity 1.5 V
Final input impedance 30 kOhms
Frequency response ± 0.2dB 20Hz - 20kHz
110 dB signal to noise ratio

Preamplifier
Phono input sensitivity 1.8 mV, 47 kOhms (max 110 mV)
Phono input signal noise ratio 76 dB
Phono input frequency response ± 0.3 dB 20 Hz - 20 kHz
Line input sensitivity 180 mV, 25 kOhms
Line input signal noise ratio 88 dB
Line input frequency response ± 1.25 dB 10 Hz - 60 kHz

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