Manuals and User Guides for Denon AVR-3808CI. We have 18 Denon AVR-3808CI manuals available for free PDF download: Service Manual, Owner's Manual, Control Protocol, Code List, Specification Sheet, Firmware Update, User Manual, Brochure & Specs, Specifications, Specification, Product Compatibility Chart, Capabilites And Compatibilities, Addendum Sheet, Comparison Chart, Dimensions