Denon AVR-681 User Manual

The Denon AVR-681 is a high-performance 7.1 channel AV receiver designed to deliver exceptional audio and video quality. It supports various surround sound formats, including Dolby TrueHD and DTS-HD Master Audio, making it ideal for home theater enthusiasts. The receiver features multiple HDMI inputs, advanced video processing, and a user-friendly interface for seamless operation. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: 7.1 channel surround sound, multiple HDMI inputs, advanced audio processing, user-friendly interface, remote control.

Installation

Unpack and inspect contents. Place the receiver on a stable surface.

1. Connect speakers: Use appropriate speaker wire for connections.
2. Connect video sources: Use HDMI cables for video input.
3. Connect to power: Plug into a suitable AC outlet.
4. Ensure all connections are secure before powering on.

WARNING! Receiver is heavy; lift with care to avoid injury.

First-Time Setup

Power on the receiver; follow on-screen prompts for initial setup.

1. Set speaker configuration: Use the setup menu to configure speakers.
2. Program channels: Use the auto-scan feature to find available channels.
3. Adjust audio settings: Use the menu to customize sound profiles.
4. For HDMI setup: Ensure all devices are connected and powered on.

CAUTION! Ensure stable surface; use two people for handling if necessary.

Specifications

• Channels: 7.1 channel surround sound.
• Power Output: 100 watts per channel.
• HDMI Inputs: 6 HDMI inputs.
• Audio Formats: Supports Dolby TrueHD, DTS-HD Master Audio.
• Video Processing: Advanced video scaling and processing.
• Weight: 20 lbs.
• Dimensions: 17.1 x 13.4 x 6.3 inches.
• Power Consumption: 500 watts.

Controls and Settings

Access OSD via remote control or front panel. Key controls include POWER, INPUT SELECTOR, VOLUME, and MENU.

Remote: POWER, INPUT, VOLUME, MUTE, SETUP, and navigation buttons.

Audio settings: Adjust bass, treble, and balance through the menu. Video settings: Configure aspect ratio and resolution.

Connecting Devices

Connect various devices using HDMI, optical, and analog inputs.

1. Turn off all devices before connecting.
2. Match cables to ports (e.g., HDMI to HDMI).
3. Select input via remote control or front panel.

Tip: Ensure all connections are secure before powering on.

Playing Media

Supports various media formats including DVD, Blu-ray, and streaming services.

1. Insert media: Load DVD or Blu-ray into the player.
2. Play: Use the remote to start playback.
3. Stop: Press STOP to pause playback.
4. Skip: Use PREV/NEXT for chapters/tracks.
5. Access streaming: Use the built-in apps for online content.

WARNING! Do not force media into the slot; eject properly.

Accessibility Features

Closed Captions: Enable in the settings menu. Audio descriptions available for supported content.

Care & Cleaning

Unplug the receiver before cleaning. Use a dry cloth only; no liquids or aerosols.

CAUTION! Do not spray liquids; keep away from heat and moisture.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © 2026 Denon; trademarks of Denon Electronics.

Troubleshooting

Reset: Menu > System > Reset if available.

Service: Contact Denon support for assistance.