NAD C399 Hybrid Digital DAC Amplifier User Manual

1. Introduction

Thank you for choosing the NAD C399 Hybrid Digital DAC Amplifier. This manual provides essential information for the proper setup, operation, and maintenance of your new audio component. The C399 is designed to deliver exceptional audio performance with its powerful amplification, high-resolution DAC, and versatile connectivity options, including HDMI eARC and Bluetooth aptX HD.

2. Safety Information

Please read all safety and operating instructions carefully before using this product. Retain these instructions for future reference.

• Ventilation: Ensure proper ventilation around the unit. Do not block ventilation openings.
• Power Source: Connect the unit only to a power supply of the type described in the operating instructions or as marked on the unit.
• Water and Moisture: Do not use this apparatus near water.
• Cleaning: Clean only with a dry cloth.
• Servicing: Do not attempt to service this product yourself. Refer all servicing to qualified service personnel.
• Cables: Protect power cords from being walked on or pinched.

3. Package Contents

Verify that all items listed below are included in the package:

• NAD C399 Hybrid Digital DAC Amplifier
• Power Cord
• Remote Control (with batteries)
• Quick Start Guide
• Safety and Warranty Information

4. Setup

4.1 Unpacking

Carefully remove the NAD C399 from its packaging. It is recommended to retain the original packaging for future transport or storage.

4.2 Connections

Before making any connections, ensure the C399 and all connected devices are powered off.

• Speaker Connections: Connect your loudspeakers to the speaker terminals on the rear panel. Ensure correct polarity (+ to + and - to -). The C399 supports 4 and 8 Ohm speakers.
• Analog Inputs: Connect analog audio sources (e.g., CD player, turntable with phono preamp) to the RCA input jacks.
• Digital Inputs: Connect digital audio sources (e.g., TV, Blu-ray player) using optical (TOSLINK) or coaxial cables to the corresponding digital input jacks.
• HDMI eARC: Connect your TV's HDMI eARC/ARC port to the C399's HDMI eARC port for high-quality audio return.
• Bluetooth: The C399 features Bluetooth aptX HD for wireless audio streaming from compatible devices.
• Power Connection: Once all audio connections are made, connect the supplied power cord to the C399's AC inlet and then to a suitable wall outlet.

4.3 Power On/Off

Press the power button on the front panel or the remote control to turn the unit on or off. The power indicator will illuminate when the unit is on.

5. Operating Instructions

5.1 Front Panel Controls

Figure 1: Front panel of the NAD C399 Hybrid Digital DAC Amplifier. From left to right, it features the power button with a blue indicator, a large rotary control for navigation/selection, a 6.3mm headphone jack, a central display showing current source and track information (e.g., "TIDAL connect", "Standing Around Crying"), source selection buttons, and a large volume knob. The top panel has ventilation grilles.

• Power Button: Located on the far left, used to turn the amplifier on or off. A blue LED indicates power status.
• Navigation/Selection Knob: A large rotary knob to the right of the power button, used for menu navigation and selection.
• Headphone Jack: A 6.3mm (1/4 inch) jack for connecting headphones.
• Display: The central screen shows the active input source, volume level, and playback information (e.g., song title, artist) when streaming.
• Source Buttons: Buttons labeled "SOURCE" allow cycling through available input sources.
• Volume Knob: A large rotary knob on the far right, used to adjust the master volume level.

5.2 Basic Operation

• Selecting a Source: Use the "SOURCE" buttons on the front panel or the remote control to select your desired input (e.g., Optical, Coaxial, HDMI eARC, Bluetooth, Analog).
• Adjusting Volume: Rotate the VOLUME knob clockwise to increase volume and counter-clockwise to decrease it.
• Bluetooth Pairing: To pair a Bluetooth device, select the Bluetooth input, then put your device into pairing mode. The C399 will appear as "NAD C399" in your device's Bluetooth settings.

5.3 Advanced Features

• High-Resolution DAC: The integrated 32-bit / 384 kHz DAC ensures high-fidelity audio reproduction from digital sources.
• HDMI eARC: Enables seamless audio transmission from compatible televisions, allowing the C399 to process TV audio with high quality.
• Modular Design: The C399 features NAD's Modular Design Construction (MDC2) for future upgrades and expanded functionality (modules sold separately).

6. Maintenance

To ensure the longevity and optimal performance of your NAD C399, follow these maintenance guidelines:

• Cleaning: Use a soft, dry cloth to clean the exterior surfaces. Do not use liquid cleaners or aerosol sprays.
• Ventilation: Keep the ventilation openings clear of dust and obstructions.
• Placement: Place the unit on a stable, level surface away from direct sunlight, heat sources, and excessive moisture.

7. Troubleshooting

8. Specifications

9. Warranty and Support

NAD products are designed for reliability and performance. For warranty information, please refer to the separate warranty document included with your product or visit the official NAD website.

For technical support, troubleshooting assistance, or service inquiries, please contact your authorized NAD dealer or distributor. You can also find additional resources and FAQs on the official NAD support page.