Denon DRA 455 Manual

The Denon DRA 455 is a high-performance stereo receiver designed for audiophiles who demand superior sound quality and versatility. It features a range of inputs for various audio sources, including AM/FM radio, CD players, and external devices. The receiver is equipped with advanced audio processing technologies to deliver clear and powerful sound. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: High-fidelity audio output, multiple input options, remote control, and built-in AM/FM tuner.

Feature	Description
Multiple Inputs	Supports various audio sources including CD, AUX, and radio.
Remote Control	Convenient control of all functions from a distance.
AM/FM Tuner	Built-in tuner for listening to radio stations.
High-Fidelity Sound	Delivers clear and powerful audio performance.
Speaker Outputs	Connects to multiple speakers for enhanced sound experience.

Installation

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

1. Connect speakers: Use appropriate speaker wire to connect to the speaker outputs.
2. Connect audio sources: Use RCA cables for CD players and other devices.
3. Plug into AC power.

WARNING! Ensure all connections are secure to avoid damage.

First-Time Setup

Power on the receiver; follow on-screen prompts if applicable.

1. Program radio stations: Use the tuning buttons to find and save stations.
2. Set audio preferences: Adjust bass, treble, and balance settings.

CAUTION! Ensure stable surface; avoid placing heavy objects on top.

Specifications

• Power Output: 100W per channel.
• Frequency Response: 20Hz - 20kHz.
• Inputs: 5 x RCA, 1 x Optical, 1 x Coaxial.
• Tuning Range: AM/FM with 30 presets.
• Dimensions: 17.1 x 5.9 x 13.4 inches.
• Weight: 20 lbs.
• Power Consumption: 200W.

Controls and Settings

Access settings via the front panel or remote control. Key controls include power, volume, input selection, and tuning.

Remote: POWER, INPUT, VOLUME, TUNING, and preset buttons.

Connecting Devices

Connect audio sources using RCA cables. Ensure all devices are powered off before connecting.

1. Match cables to ports (e.g., RCA to CD).
2. Select input via the remote control.

Tip: Ensure all connections are secure to avoid audio issues.

Playing Audio Media

Supports various audio formats including CD and radio.

1. Insert CD: Load the disc into the CD tray.
2. Play: Press PLAY on the remote or front panel.
3. Stop: Press STOP to halt playback.
4. Skip: Use NEXT/PREV buttons for tracks.

WARNING! Do not force the disc into the tray; ensure it is loaded correctly.

Accessibility Features

Remote control provides easy access to all functions for users with mobility challenges.

Care & Cleaning

Unplug before cleaning. Use a dry cloth only; avoid 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

Symptom	Possible Cause	Corrective Action
Remote does not work	Obstacles/batteries	Remove obstacles; point at IR sensor; install fresh batteries.
No sound	Connections/mute	Ensure receiver is on; check connections; adjust mute.
Sound distortion	Volume too high	Reduce volume level.
Channels not programming	Antenna/menu	Use auto-program in menu; ensure antenna connected.

Reset: Menu > System > Reset if available.

Service: 1-800-555-0199; www.denon.com