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The Onkyo TX-NR646 7.2-Channel Network AV Receiver delivers wireless audio streaming and powerful multi-channel audio. This receiver features Onkyo's WRAT amplifier technology and delivers up to 100W per channel at 8 ohms for robust audio playback. Built-in AirPlay and Bluetooth allow you to wirelessly stream music from compatible audio sources such as computers, MP3 players, smartphones, and tablets. Onboard Wi-Fi and Ethernet connectivity gives you the ability to stream music from Internet radio sources and use DLNA technology to share content with compatible networked devices. Two Wi-Fi antennas are on the rear of the receiver for optimized signal range.
The Onkyo TX-NR646 has eight HDMI 2.0a inputs for interfacing audio and video sources, and the pass-through of 3D and 4K video sources. There's also a USB port for interfacing additional audio sources. Onkyo also offers a free remote app for controlling your receiver from a smartphone or tablet. Built-in high-resolution audio support allows you to take advantage of dynamic surround sound formats like DTS-HD Master Audio and Dolby TrueHD.
AccuEQ Room Calibration
With the included microphone, Onkyo proprietary AccuEQ technology measures and corrects speaker distances, levels, crossovers, and frequency response from one convenient listening position to ensure clear and cohesive surround-sound.
DTS:X is an object-based surround sound technology that includes height to deliver a fully-immersive listening experience to your living room.
Dolby Atmos Support
Using optional height speakers placed in an elevated position, Dolby Atmos produces room-filling multi-dimensional sound.
Hi-Current Amp Design
High instantaneous current enhances speaker control for accurate and dynamic audio reproduction.
Hi-Resolution Audio Support
This receiver supports high-resolution FLAC 192 kHz/24-bit and 96 kHz/24-bit albums (including 5.6 MHz DSD playback) on PC or NAS
4K/60 Hz-capable 4:4:4 HDMI 2.0a terminals for Ultra HD entertainment
Supports HDCP 2.2 for 4K/Full HD video streaming and broadcasts
Bluetooth version 2.1 + EDR capability (compatible profile: A2DP v1.2, AVRCP v1.3) with Advanced Music Optimizer DSP technology
Advanced Music Optimizer to improve the sound quality of compressed digital audio files
Internet radio and music streaming subscription services included (TuneIn Radio, Pandora, Slacker, SiriusXM Internet Radio, Spotify, and Deezer)
Playback compressed, lossless, and high-resolution audio via local network (MP3, WMA, WMA lossless, FLAC, WAV, Ogg Vorbis, AAC, Apple lossless, DSD 5.6 MHz, LPCM, and Dolby TrueHD)
Control and stream with the free Onkyo remote streaming apps for iPod touch/iPhone 5 and Android devices
PM bass boost for deep bass and clear mid-range
Powered zone 2 and zone 2 line-outs for distributed audio playback in another room
Whole house mode for synchronized house-wide audio
Bi-amping capability for front channels
WRAT (Wide Range Amplifier Technology)
H.C.P.S. (High Current Power Supply) massive high-power transformer
Discrete output stage circuitry
Optimum gain volume circuitry
PLL (Phase Locked Loop) jitter-cleaning circuit technology for S/PDIF audio
HDMI for 4K/60 Hz Video, 3D, Audio Return Channel, Deep Color, x.v.Color, Lip Sync, Dolby Atmos, Dolby TrueHD, DTS-HD Master Audio, DTS:X, DVD-Audio, Super Audio CD, Multichannel PCM, and CEC
AK4458 384 kHz/32-bit digital-to-analog converters (8-channels x 1)
Dual 32-bit digital signal processing engines
Dolby TrueHD and DTS-HD Master Audio decoding
4 DSP Modes for Gaming: Rock, Sports, Action, and RPG
Theater-dimensional virtual surround function
Double bass function
A-form listening mode memory
USB port for mass-storage-class USB memory audio playback capability
Phono input for turntable connection
2 parallel subwoofer pre-outs
Graphical overlaid on-screen display (OSD) via HDMI with quick set-up
Hybrid standby with HDMI pass-through
Independent crossover adjustment for each channel (40, 50, 60, 70, 80, 90, 100, 120, 150, 200 Hz)
A/V sync control (up to 500 ms at 48 kHz)
Tone control (bass/treble)
3-mode display dimmer (normal/dim/dimmer)
40 FM/AM random presets
Firmware updates via Ethernet and USB
RIHD (Remote Interactive Over HDMI) for system control
Preprogrammed RI (Remote Interactive) remote control