I prepared this comparison after testing both models. Choosing between Onkyo TX-NR676 vs Onkyo TX-RZ720 may be challenging and this comparison should help you.
Both receivers support 4K video at 60 HZ with HDR10, Dolby vision, BT.2020. These two models have powerful codecs to play Dolby Atmos and DTS:X, RZ720 is also THX-certified. Both models were designed using the VLSC technology from Onkyo and Dynamic Audio Amplification. TX-NR676 has a 32-bit DAC, while TX-RZ720 features a 24-bit DAC. Comparing Onkyo TX-NR676 vs TX-RZ720 in terms of the total power output we see – TX-RZ720 with 770 W versus Onkyo TX-NR676 with 700 W.
These models have wireless modules that let you use Bluetooth, Wi-Fi, Play-Fi, Chromecast, and FireConnect. You can also access various audio streaming services. Both receivers support powered zone 2, which can be controlled via an Onkyo application. These devices have 7 in/2 out HDMI ports as well as different kinds of ports. Customers do not experience any troubles with ports. Onkyo uses the AccuEQ system to control speakers. This system is quite flexible and you can tune speakers and save presets. Onkyo provides you with everything you need to complete audio calibration.
These models look similar – both have a simple LCD display and three knobs – two small one on the left side and a big one on the right side. The buttons above the flap let you change the signal source. The flap covers extra buttons and port. The buttons are big enough to avoid pressing something accidentally. The remote controller is simple, but it has all the buttons that you need – you can change volume, source, access the menu, etc. The shipping size is almost the same - 14.8x17.1x6.9 (6.8 for NR676) inches. The weight is 23 pounds for Onkyo TX-RZ720 and 22 pounds for TX-NR676.
Onkyo TX-RZ720 overview
Onkyo TX-NR676 overview
The best receiver is Onkyo TX-RZ720. Check Onkyo TX-RZ720 price on Amazon