Review of the Onkyo 646 Reviews Home Theater Receiver

May 16, 2023
Justin Lumiere

The onkyo 646 reviews is an audio/video receiver designed to deliver an exceptional home theater experience, featuring Dolby Atmos and DTS:X support as the latest immersive surround sound formats, giving you an authentic cinematic experience. Furthermore, with AirPlay, Wi-Fi, Bluetooth built in as well as plenty of streaming music options including Spotify, Pandora, SiriusXM Internet Radio Slacker TuneIn built-in apps this receiver provides ample music streaming options as well. Plus with 4K/60Hz pass-through HDMI inputs/outputs it connects all sources seamlessly!

The Onkyo 646 features an advanced AK4458 DAC capable of decoding lossless and compressed music files such as MP3, WMA Lossless, FLAC, OggVorbis AAC Apple Lossless DSD 5.6MHz for exceptional audio quality at an attractive price point. With seven analog inputs (including phono input) three digital plus powered zone 2 outputs this receiver makes multi-room setups possible with ease.

Onkyo's innovative amplification technology delivers high-performance dynamics with minimal distortion and noise for a full and natural sound experience in your home cinema system. Wide Range Amplifier Technology helps maximize existing speaker performance to enhance dynamic range, while AccuEQ Advance room correction software uses built-in microphone calibration to fine-tune frequency response and speaker placement for an improved in-theater experience.

Both Onkyo 646 and NR747 models feature Dolby Atmos and DTS:X support to deliver immersive, three-dimensional audio. Dolby Atmos is the more widely supported of these object-based surround formats; it works well with existing speakers while DTS:X is more expensive; recently some Blu-ray discs were encoded to support it.

The TX-NR646 and NR747 offer multiple streaming options for music playback, including AirPlay and DLNA support; you can even control it using voice control via Google Assistant or Siri via Sonos One speakers! In addition, there's the Onkyo app which can provide simple playback controls as well as general entertainment purposes.

This receiver is HDCP 2.2 compatible, providing access to copy-protected content. Furthermore, its HDMI 2.0a with HDR pass-through enables you to connect it with a compatible TV and transfer high dynamic range images from your source. Furthermore, its HDMI ports are ARC compatible, eliminating extra composite or optical cables; and its CEC function enables a single remote for all connected devices for easier home entertainment system setup and reduce clutter on coffee tables.

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