Onkyo TX-NR555 meets customer expectations – why do you want to know why?

In my opinion, the Onkyo TX-NR555 is a great example of how home theater amplifiers have changed over the years, from audio centricity to audio, video, network control and a variety of source streaming. The Onkyo TX-NR555 is designed for use in average sized rooms, but it also has Zone 2 functionality. Experience realistic multi-dimensional sound with DTS X with interactive features to personalize your outstanding listening experience.


The TX-NR555 comes with a remote control, which is completely different from the control panel. There are only the most necessary buttons: menu control buttons, input switching and playback controls of the built-in player. Then I found AM / FM antenna, microphone for AccuEQ speaker setting system and general setting manual in the package.


The TX-NR555 can be connected via Ethernet or built-in Wifi, which allows you to access music streaming content from any media server on your computer or home network. I added Google Cast using a firmware update. AirPlay is already on the receiver. I really like the built-in Bluetooth feature, which allows wireless streaming directly from various devices like smartphones and tablets. Good news for those who like to listen to vinyl records – find phono input for listening. It is important to mention that the TX-NR555 is an additional audio feature that is compatible with BlackFire Research's FireConnect via a firmware update. After installation, I can send the Internet, USB and Bluetooth audio to the speaker and place it in another room in my house.


New menu graphics provide an easy-to-use interface to customize your listening and viewing experience. The receiver is powered and has a line-out Zone 2 connection, which leads to the second room.

The TX-NR555 provides Zone 2 operation for transferring separately controllable audio sources to other meeting rooms. However, with either option, selecting NET or Bluetooth makes it impossible to play separate sources in the main and second zones, and you cannot listen to two different radio stations (the NR555 has only one radio tuner) ). Despite this Here are two ways to take advantage of Zone 2 features.

  • Use the dedicated Zone 2 speaker terminals. Set up is done by connecting the Zone 2 speakers directly to the receiver.
  • Use the supplied preamplifier outputs instead of speaker connections. However, to use this option, you need to connect the Zone 2 preamplifier outputs to a second two-channel amplifier (I used it because there is an additional dedicated stereo receiver available).

Video performance

Although the TX-NR555 offers both HDMI and analog video inputs, the trend continues to eliminate S-video inputs and outputs. The TX-NR555 can not only provide video pass-through of 2D, 3D and 4K video signals, but can also provide up to 4K upscaling, which is more commonly used in home theater receivers at this price point. I found that the TX-NR555 can provide almost excellent upscaling from standard definition (480i) to 4K.

Sound quality

Where the action takes place – this is how Onkyo presents new products, and I fully agree with the producers. Two types of Blu-Ray Disc content were used to open the surround sound field from the horizontal constraints of traditional surround sound formats and speaker layouts. I watched dozens of movies until I started writing this review. Since I am not a lazy person, I could not stop at the amazing quality of sound. All environmental influences, such as rain, wind, explosions, planes, helicopters, were precisely placed above the listening position. And this is due to the encoded effects Dolby Atmos and DTS: X. A more complete front stage and more accurate object placement in the surround sound field provide an immersive listening experience.

Even for ceiling speakers larger than 7.1, the sound is loud enough and has a funny amount of settings. The AccuEQ program actually cleans up the sound in a messy room and cleans the sound of music to the point where no EQ settings are needed. menu).

If anyone prefers to listen to FM radio, the incredible sensitivity of the FM tuner section has well received the FM radio signal using the provided wired antenna.


Onkyo TX-NR555 is compatible with the latest Ultra HD content and features the latest HDMI specifications to fully support incredible 4K video. In other words, the NR555 is compatible with all the latest video formats, so the NR555 can be connected to any TV with an HDMI input. Personally, I easily connected all my favorite HDMIs and enjoyed 4K upscaling at 1080p.

An amazing and convenient HDMI connection option is standby pass-through. Onkyo TX-NR555 audio can be specified even when the receiver is off, and the video signal is sent to the TV via the NR555. This is useful when you want to see something in the media streamer but don't want to turn on the full home theater system.


Onkyo's Room Acoustic Calibration System makes speaker setup easy. New Acura Flex technology delivers consistent object-based soundtracks using high-height speakers. To set up the TX-NR555, you can use the built-in test tone generator with a sound meter and manually specify all speaker level distance and level settings.

You can also take advantage of the receiver's built-in AccuEQ room calibration system. If you're calibrating the room for Dolby Atmos settings, there's an additional setting called AccuReflex that takes into account sound delay issues when using vertical firing height speakers.

By the way, the result of the auto setup may not always be accurate (e.g. speaker level may not be as you want). In this case, do not change the automatic setting, go to manual speaker setting for further adjustment. Are the speakers calibrated for the room and are all sources connected? TX-NR555 is ready.

Conclusion: analyzed and decided on all the benefits of Onkyo TX-NR555.

The receiver features dynamic audio amplification, precisely performing noise-free signal processing with high current power for accurate speaker control. VLSC (Vector Linear Shaping Circuitry) reproduces a very faithful audio signal for rich, clear sound.

The Onkyo TX-NR555 can't be used with high-end receivers, but it's a very good value for those who want the same features for use in medium rooms. Even if you can't jump into Dolby Atmos or DTS: X, you can still use the NR555 for 5.1 or 7.1 channel setup.

This receiver has many HDMI inputs that support 4k, and you can choose to simply go through with the receiver off. Also, I like the fact that if you don't have a subwoofer, it will pass the entire speaker response to the main speakers. If you have a great set of main speakers that can play deep bass, it works well without a sub. Wi-Fi function and Pandora button connection is easy. It was easy to set up using a microphone. I definitely recommend this receiver.