🏷️ Basic Information Identification Make: Denon Model: DN-X400 Year: Not Specified Generation: Not Specified 📋 Manual Details Document Info Manual Type: Service Manual Language: English Format: PDF Availability: Downloadable 📐 Dimensions Physical Dimensions: Not Specified Weight: Not Specified 🔧 Maintenance Troubleshooting Common Issues: Faders, knobs, input/output connectivity Repair Guides: Component-level diagnostics and replacement Cleaning Cleaning Instructions: Dusting, contact cleaner for potentiometers 📄 Technical Specs Audio Processing Channels: 4 Inputs: 4 Line, 2 Phono, 1 Mic Outputs: Master, Zone, Booth, Record, Headphones Eq Bands: 3-band EQ per channel Crossfader: VCA-controlled Fx Send Return: Yes Sampling Rate: Not Specified Bit Depth: Not Specified Connectivity Usb Port: No Bluetooth: No Power Requirements Power Supply: AC Adapter Voltage: 100-240V AC