🏷️ Basic Information Identification Make: Marantz Model: AV9000 Year: Unknown (Service Manual) Generation: Unknown 📋 Manual Details Document Information Manual Type: Service Manual Language: English Format: PDF Availability: Downloadable 🛡️ Safety Features Precautions Power Requirements: AC 120V / 60Hz (region dependent) Ventilation Requirements: Ensure adequate ventilation 🔧 Maintenance General Maintenance Cleaning Instructions: Refer to manual for cleaning procedures Troubleshooting Common Issues: Refer to troubleshooting section in manual Calibration Speaker Calibration: Manual calibration procedures detailed 📄 Product Details Device Type Device Category: Audio/Video Component Device Subtype: AV Pre Tuner 📄 Technical Specifications Audio Processing Surround Sound Formats Supported: DTS, Dolby Digital, Dolby Pro Logic Digital Signal Processing Modes: Various DSP modes (e.g., Concert Hall, Stadium) Frequency Response: 20 Hz - 20 kHz Total Harmonic Distortion: < 0.05% Signal To Noise Ratio: > 100 dB Connectivity Digital Inputs: Coaxial, Optical Analog Inputs: CD, DVD, VCR, Tape, AUX, Phono Pre Outs: 7.1 Channel Video Inputs: Component, S-Video, Composite Remote Control Features: Programmable Remote