Onkyo TX-NR676
Onkyo TX-NR676 7.2 Channel Network A/V Receiver
Model: TX-NR676
Brand: Onkyo
1. Introduction
Product Overview
The Onkyo TX-NR676 is a 7.2-channel network A/V receiver designed to provide a comprehensive home entertainment experience. It supports advanced audio and video formats, including 4K video pass-through with HDR10 and Dolby Vision compatibility, ensuring high-quality visuals. With its robust amplification and network capabilities, the TX-NR676 streamlines access to various app-based music services, on-demand TV, and gaming content.
Key Features
- 210 W/Ch (6 Ohms), 100 W/Ch (8 Ohms) power output.
- DTS:X and Dolby Atmos support for up to 5.2.2 Channels.
- Accurate, noise-free signal processing with high-current power for dynamic speaker control.
- 7 HDMI inputs and 2 HDMI outputs, including 1 front input, all supporting HDCP 2.2 and HDR.
- Chromecast built-in, DTS Play-Fi, Fire Connect, and Bluetooth connectivity.
- Integrated internet radio and streaming services like Spotify, TIDAL, Amazon Music, TuneIn, Pandora, and Deezer (requires future firmware updates).
- Powered Zone 2 Speaker Outputs and Zone 2 Line Output with dedicated DAC for multi-room audio.
2. What's Included
Please ensure all the following items are present in the packaging:
- Onkyo TX-NR676 A/V Receiver
- Remote Controller
- Two AAA Batteries (for remote controller)
- Indoor FM Antenna
- Speaker Setup Microphone
3. Setup Guide
Connections
Before connecting any cables, ensure the receiver is powered off and unplugged from the wall outlet. Refer to the rear panel diagram for correct port identification.

Figure 3.1: Rear Panel Connections. This image displays the comprehensive array of input and output terminals on the back of the TX-NR676, including HDMI, optical, coaxial, analog audio, and speaker terminals, crucial for connecting all your home theater components.
- HDMI Connections: Connect your source devices (Blu-ray player, game console, streaming device) to the HDMI IN ports. Connect your TV or projector to the HDMI OUT (MAIN) port.
- Speaker Connections: Connect your speakers to the corresponding speaker terminals (FRONT, CENTER, SURROUND, SURROUND BACK/HEIGHT). Ensure correct polarity (+ to + and - to -). The TX-NR676 supports 7.2 channel configurations.
- Subwoofer: Connect your powered subwoofer(s) to the SUBWOOFER PRE OUT 1 and/or 2.
- Network Connection: For network features and firmware updates, connect an Ethernet cable from your router to the NETWORK port, or use the built-in Wi-Fi.
- Antennas: Connect the supplied FM antenna for radio reception.
Initial Power-On and Speaker Calibration
After all connections are made, plug the receiver into a power outlet. Turn on the receiver and your TV. The initial setup wizard will guide you through basic settings. Use the supplied speaker setup microphone and the AccuEQ Room Calibration system to automatically optimize speaker levels, distances, and equalization for your listening environment. This process is crucial for achieving optimal sound performance.
4. Operating Instructions
Basic Operation

Figure 4.1: Front Panel Controls. This image highlights the main controls on the front of the receiver, including the power button, input selectors, volume knob, and display, providing direct access to essential functions.
- Power On/Off: Press the ON/STANDBY button on the front panel or remote control.
- Input Selection: Use the input selector buttons (e.g., BD/DVD, CBL/SAT, GAME) on the front panel or remote to switch between connected devices.
- Volume Control: Adjust the master volume using the large VOLUME knob on the front panel or the VOL +/- buttons on the remote.
- Listening Modes: Press the LISTENING MODE button to cycle through various audio modes (e.g., Dolby Surround, DTS Neural:X, Stereo).
Network Features
The TX-NR676 offers extensive network capabilities:
- Streaming Services: Access integrated music streaming services via the receiver's network connection.
- Chromecast built-in: Cast audio from compatible apps on your smartphone or tablet directly to the receiver.
- Bluetooth: Pair your Bluetooth-enabled devices to stream audio wirelessly.
- Firmware Updates: Connect the receiver to the internet to receive important firmware updates that enhance performance and add new features.
Remote Control

Figure 4.2: Remote Control Layout. This image shows the full layout of the included remote control, detailing buttons for input selection, volume, navigation, and specific functions like Quick Menu and Zone 2 control.
The supplied remote control provides full command over the receiver's functions. Ensure the AAA batteries are correctly inserted. Familiarize yourself with the layout for convenient operation.
5. Maintenance
Proper care ensures the longevity and optimal performance of your Onkyo TX-NR676 receiver.
- Cleaning: Wipe the exterior with a soft, dry cloth. For stubborn dirt, use a slightly damp cloth and then dry thoroughly. Avoid using abrasive cleaners, solvents, or chemical sprays.
- Ventilation: Ensure adequate ventilation around the receiver. Do not block the ventilation openings on the top or sides. Allow at least 20 cm (8 inches) of clear space above the unit and 10 cm (4 inches) on the sides.
- Placement: Place the receiver on a stable, level surface away from direct sunlight, heat sources, and excessive dust or moisture.
- Power Cord: Periodically check the power cord for any damage. If damaged, discontinue use and contact a qualified service technician.
6. Troubleshooting
This section addresses common issues you might encounter. For more detailed troubleshooting, refer to the complete User Manual PDF available for download.
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Power cord disconnected; Power outage | Ensure power cord is securely plugged in; Check household circuit breaker. |
| No sound | Incorrect input selected; Speaker cables disconnected; Mute function active | Select correct input source; Check all speaker connections; Deactivate mute. |
| No video output | HDMI cable disconnected; Incorrect HDMI input/output selected | Verify HDMI cable connections; Ensure correct HDMI input on receiver and TV. |
| Remote control not working | Batteries depleted or incorrectly inserted; Obstruction between remote and receiver | Replace batteries; Ensure clear line of sight to receiver's IR sensor. |
| Network connection issues | Router/modem issue; Incorrect network settings | Restart router/modem; Check network settings in receiver's menu. |
7. Specifications
Detailed technical specifications for the Onkyo TX-NR676 A/V Receiver:
| Feature | Detail |
|---|---|
| Model Number | TX-NR676 |
| Channels | 7.2 Channel |
| Power Output | 210 W/Ch (6 Ohms, 1 kHz, 10% THD, 1-ch driven); 100 W/Ch (8 Ohms, 20 Hz–20 kHz, 0.08% THD, 2-ch driven, FTC) |
| Audio Decoding | DTS:X, Dolby Atmos, Dolby TrueHD, DTS-HD Master Audio |
| HDMI Inputs | 7 (1 front / 6 rear) |
| HDMI Outputs | 2 (Main, Zone 2) |
| HDMI Features | 4K/60p, HDR10, Dolby Vision, HLG, BT.2020, HDCP 2.2, ARC, CEC |
| Connectivity | Bluetooth, Wi-Fi (Chromecast built-in, DTS Play-Fi, FireConnect), Ethernet |
| Dimensions (W x H x D) | 17.1 x 6.8 x 14.8 inches (435 x 173.5 x 378 mm) |
| Weight | 22 pounds (10.0 kg) |
| Power Supply | AC 120 V~, 60 Hz |
8. Warranty and Support
Warranty Information
Onkyo products are manufactured to high standards and are warranted against defects in materials and workmanship. The specific warranty period and terms may vary by region and product. Please retain your proof of purchase for warranty claims. For detailed warranty information, refer to the warranty card included with your product or visit the official Onkyo website.
Customer Support
For technical assistance, service, or further inquiries, please contact Onkyo customer support. You can find contact information and additional resources on the official Onkyo website or by referring to the full user manual.
Official User Manual (PDF): Download Here
Visit the Onkyo Store: Onkyo Amazon Store
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