Onkyo TX-NR838 7.2 Network Receiver w/ Bluetooth (Certified Refurbished) This Certified Refurbished product is tested & certified by Onkyo to look and work likenew. The product includes all original accessories, and is backed by a 1 year warranty. Five of the receiver's seven HDMI inputs are based on the latest HDMI 2.0 specification to support 4K video at 50/60 frames per second and 21:9 aspect ratio for theaterreference movie display. The Onkyo TXNR838 doubles the power with two 32bit processing engines handling multichannel studiomaster soundtracks along with a large variety of hires audio files, including 5.6 MHz DSD (the same format used for Super Audio CD). T The TXNR838 has WiFi and Bluetooth technology built in. For network audio, use the remote app to stream music stored on your smartphone and to locate and stream hires audio from any networkattached DLNAcertified device (such as a PC or NAS). The TXNR838 also handles 5.6 MHz DSD and Dolby TrueHD formats for the ultimate in depth and clarity. With surpassing DSP power, highquality TI BurrBrown D/A conversion, and Onkyo's lowdistortion amplification, hires music on your home theater is not only easy to enjoy, it sounds absolutely fantastic.