🏷️ Basic Information Identification Make: Marantz Model: PM-68 / PM-78 Year: Unknown Generation: Unknown 📋 Manual Details Manual Information Manual Type: Service Manual Language: English Format: PDF Downloadable: Yes Product Name: Marantz 74 PM-68 PM-78 Service Manual PDF Download Product Description: Marantz 74 PM-68 PM-78 Service Manual 📄 Technical Specifications Amplifier Performance Output Power Per Channel 8Ohm: 100W (PM-68), 105W (PM-78) Output Power Per Channel 4Ohm: 130W (PM-68), 140W (PM-78) Total Harmonic Distortion: 0.008% (PM-68), 0.005% (PM-78) Frequency Response: 5 Hz to 100 kHz Input Sensitivity: CD/Video 150mV, Phono MM 2.5mV, Phono MC 0.17mV Signal To Noise Ratio: 110 dB (CD/Video), 85 dB (Phono MM), 67 dB (Phono MC) Power Supply Power Requirements: AC 220V/240V 50/60Hz Power Consumption: 220W Connectivity Speaker Outputs: A / B Line Inputs: CD, Video 1, Video 2, Tuner, Phono, AUX 1, AUX 2 Pre Out: Yes Rec Out: Yes Physical Dimensions Dimensions W H D: 458 x 140 x 378 mm Weight: 12.6 kg