Denon AVR-S510BT vs Onkyo TX-NR656

Dual subwoofers can offer more choices for fine-tuning your system. It provides an optimal sound at multiple different listening positions and give the user options for different subwoofer placements.

Is quite easy to set up, even if it’s your first receiver. By following the instructions it will help you connect all the required parts to make it usable.

In total it has 5 HDMI inputs, which is reasonable for the price. Three of those are HDCP 2.2 compatible to future proof your home theater.

Can use four quick select buttons to switch to your most used sources and audio settings. It greatly simplifies the experience by bypassing multiple selection screens to arrive to your favorite settings.

Offers a way of calibrating its settings specifically for your setup. It only lasts a couple of minutes and adjusts them to your room and speakers.

A USB port, which is located at the front, is a convenient way of listening to your music. Also, Bluetooth connectivity with A2DP profile is available, to support streaming of music from other devices through Bluetooth.

A dedicated control app is available on Google Play and the App store. The functions of Denon 500 Series Remote include on/off switch, volume up/down or mute and source selection.

The receiver can play supported audio tracks with a more immersive sound than regular audio tracks. This is done through its object-based audio which can simulate a specific sound in a 3D environment inside your room. The employed features are Dolby Atmos and DTS:X. Be aware that to enable DTS:X technology a firmware upgrade is necessary.

The displayed image with High Dynamic Range (HDR) and BT.2020 technology seems more real with greater depth. This is because it can display a larger scope of contrast and colors when compared to an ordinary receiver.

The receiver has seven active speaker channels which provide a more immersive sound when compared to a five speaker setup. In addition, it has two subwoofers which increases the overall bass quality. The whole combination means that the sound is more evenly distributed through the room and you can have more quality options with speaker and subwoofer placements.

The receiver can control the audio for two different rooms at once. Seven speakers can remain at the main room and two additional speakers can be connected that lead to another room. But be aware that only seven speakers can be active at the same time. This means that if you want to play some music in the second room, the main room will have only five active speakers available. It has nine binding posts available to avoid constantly reconnecting the different speakers to the receiver.

There are a lot of options for music playback. With its internet connectivity it can stream music from internet radios like Spotify, Pandora and Deezer. It even has Apple’s Airplay available to stream content from Apple devices. Can connect to a Bluetooth device for music streaming and has a USB port for flash drives. This combination of features is just about everything that you would ever need for music playback.

The receiver has eight HDMI inputs and three of those are HDCP 2.2 compliant. Other receivers at this price range usually have around four inputs which is a rather large increase.