Used Onkyo TX-NR636 7.2-Channel Network AV Receiver

The Onkyo TX-NR636 wins prime position on your gear rack for three reasons. Firstly, it's one of the only A/V receivers to support future Ultra HD movie streaming as well as 4K gaming at 60 fps with 4K/60 Hz-compatible HDMI 2.0 inputs and HDCP 2.2 copy-protection compatibility. Qdeo upscaling technology also converts low-res DVDs and games into pin-sharp Full HD or 4K (if you have an Ultra HD display). Secondly, it sounds incredible, with Three-Stage Inverted Darlington Circuitry on the front and center channels for all-enveloping surround sound and musical two-channel audio. Thirdly, it's extremely easy to use, with inbuilt Wi-Fi for universal hi-res streaming from PC, NAS and smartphone. You can select from a wild variety of music streaming services and locate your network-attached libraries using the remote app, or stream almost any audio via Bluetooth. Overlaid menus with InstaPrevue technology make loading content fast and simple. Throw in an MM phono stage, room equalization and powered Zone 2 and you've got a value packed 7.2-channel powerhouse ready for the next wave of high-resolution entertainment.

Ready for the Future with HDMI 2.0
Imagine playing the latest RPG blockbuster on your Ultra HDTV at a breathtaking 60 frames per second. Now add thunderous 7.2-channel surround sound from Onkyo. With HDMI terminals on your TX-NR636 receiver supporting 4K/60 Hz, this dream can be your reality. Even if you're not planning on upgrading your current display right away, it's good to know your receiver is ready for the future. Supports 4K/60 Hz transmission of YCbCr 4:2:0 as defined by HDMI 2.0 specification.

Supports HDCP 2.2 for 4K Streaming and TV
With Hollywood studios, satellite TV broadcasters and video streaming services announcing a move to HDCP 2.2 copy protection for future 4K and Full HD releases, it's important that your A/V receiver can handle this new standard. The TX-NR636 is one of the first A/V receivers to support HDCP 2.2, making it ready for next-generation Ultra HD streaming and broadcasting.

4K Video Upscaling with Qdeo Technology
The TX-NR636 features Qdeo technology from Marvell to upscale low-res video to liquid-smooth 1080p (for HDTV) and 4K (3840 x 2160 pixels) with a compatible display. This means video from older gaming consoles and DVD players looks clean and sharp, giving old favorites a new lease on life.

Wi-Fi and Bluetooth Inside
The TX-NR636 has Wi-Fi and Bluetooth technology built in. Complete the setup, download Onkyo's control app and you've got a graphic remote control and range of streaming features in the palm of your hand. Or pair your Bluetooth-capable device and stream almost any audio to your home theater. With Advanced Music Optimizer enhancement, music via Bluetooth has never sounded so good.

Stream Direct from Smartphone and Tablet
For lossless audio streaming, just tap on the Onkyo Remote App icon on your smartphone to find your music loaded and ready to stream with all the controls you're used to. The receiver can switch on and select your preferred playback mode automatically. Stream Network-Attached Hi-res Audio Onkyo A/V receivers are engineered for universal hi-res compatibility and ease of use. Use the remote app to locate your 192/24 and 96/24 albums (including 5.6 MHz DSD playback) on PC or NAS and bask in the clarity, depth and detail of high-resolution music.

Built-in Internet Radio and Streaming
If you can think of it, you'll most likely be able to stream it. The receiver includes Spotify, AUPEO!, TuneIn and now Deezer, the music subscription service available in over 200 countries and boasting a library of 25 million songs. You can search for available music using your free Onkyo remote app.

Play Lossless Music from USB
The front-panel USB port also plays almost any audio format from mass-storage-class drives. As well as compressed files, there's support for FLAC, WAV, ALAC, Dolby TrueHD (48 kHz) and DSD. You can also connect a PC, smartphone, or music player using one of the many digital and analog inputs.

MHL for Mobile Device Connection
An HDMI/MHL terminal is included to connect smartphones and other electronic devices, allowing you to display 1080p video and other media on your HDTV with 7.1 channels of surround sound.

Dolby Pro Logic IIz Seven-Channel Surround Upmixing
Dolby Pro Logic IIz adds height to the soundstage with two Front Height channels immersing you deeper into the film. The system upmixes stereo or 5.1 sources to 7.1 channels and offers a number of optimized listening modes.

Remote Control App for Smartphone and Tablet
The free Onkyo Remote App gets your system up and running in moments. All major playback controls, speaker adjustments, listening mode/input source selections are at your fingertips. Tap the music icon for internet radio or to hear the music stored on your smart mobile, PC, or NAS.

Fast Switching and Adjustment
If you want to quickly adjust a speaker level, switch DSP modes, or change inputs, the "Q" remote control button does it in seconds by overlaying a simple transparent menu on screen. Use InstaPrevue technology to preview content playing on any HDMI-connected component-the overlaid video thumbnails are great for keeping an eye on a cable channel while you're watching a Blu-ray, for example and also make video switching very clear and simple.

AccuEQ Room Calibration
AccuEQ optimizes surround-sound and two-channel audio to suit your listening space. In particular, AccuEQ extracts the best possible performance from your front speakers to make stereo listening more dynamic and exciting. The system analyzes speaker setup and room acoustics from one listening position (which simplifies the calibration process) and optimizes frequency response and output levels for maximum clarity.