Denon AH-GC20 Manual

The Denon AH-GC20 is a premium wireless headphone model designed for audiophiles who seek high-quality sound and comfort. Featuring advanced noise-cancellation technology, Bluetooth connectivity, and a built-in microphone for hands-free calls, the AH-GC20 delivers an immersive listening experience. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: Bluetooth connectivity, Noise-cancellation technology, Built-in microphone, Comfortable ear pads, Long battery life.

Feature	Description
Bluetooth	Wireless connectivity for audio streaming
Noise Cancellation	Reduces ambient noise for an immersive experience
Built-in Microphone	For hands-free calls and voice commands
Comfortable Ear Pads	Soft padding for extended listening sessions
Battery Life	Up to 20 hours of playback on a single charge

Installation

Unpack and inspect contents. Ensure headphones are charged before use.

1. Charge headphones: Use the provided USB cable to connect to a power source.
2. Pair with device: Enable Bluetooth on your device and select AH-GC20 from the list.
3. Adjust fit: Adjust the headband and ear pads for comfort.

WARNING! Do not expose headphones to extreme temperatures or moisture.

First-Time Setup

Power on headphones; follow pairing instructions.

1. Turn on headphones: Press and hold the power button until you hear a tone.
2. Activate pairing mode: Hold the Bluetooth button until the indicator light flashes.
3. Select headphones on your device: Confirm pairing when prompted.

CAUTION! Ensure headphones are within range of the device during pairing.

Specifications

• Driver Size: 40mm.
• Frequency Response: 5Hz - 40kHz.
• Impedance: 32 ohms.
• Bluetooth Version: 4.1.
• Battery Type: Lithium-ion.
• Weight: 250 grams.
• Noise Cancellation: Active noise-cancellation technology.

Controls and Settings

Access controls via physical buttons on the headphones. Power, Volume, and Playback controls are easily accessible.

Remote: Power button, Volume up/down, Play/Pause, Next/Previous track.

Adjust noise cancellation levels through the dedicated button. Check battery status via the LED indicator.

Connecting Devices

Bluetooth: Pair with smartphones, tablets, and computers.

1. Ensure headphones are powered on and in pairing mode.
2. Access Bluetooth settings on your device and select AH-GC20.
3. Confirm connection and enjoy your audio.

Tip: Keep headphones within 10 meters of the device for optimal performance.

Playing Audio

Supports various audio formats via Bluetooth.

1. Play audio: Use your device's media player to start playback.
2. Control playback: Use the buttons on the headphones for play, pause, and skip.
3. Adjust volume: Use the volume buttons on the headphones.

WARNING! Avoid listening at high volumes for extended periods to protect your hearing.

Accessibility Features

Voice prompts for battery status and pairing. Compatible with voice assistants for hands-free control.

Care & Cleaning

Unplug and power off before cleaning. Use a soft, dry cloth to clean the headphones.

CAUTION! Do not use liquids or abrasive materials.

Regulatory Information

FCC compliance: This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Headphones won't turn on	Low battery	Charge headphones using the USB cable.
No sound	Bluetooth not connected	Ensure headphones are paired with the device.
Poor sound quality	Distance from device	Move closer to the audio source.
Noise cancellation not working	Feature disabled	Activate noise cancellation using the dedicated button.

Reset: Refer to the user manual for reset instructions if available.

Service: For support, contact Denon customer service.