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"http://www.amazon.com/gp/product/B00IXSDENQ?tag=httphealth009-20
Yamaha factory refurbished items are products which may have been purchased and opened by a consumer but have been tested inspected and repackaged by Yamaha
Yamaha factory refurbished items may have minor cosmetic damage
Wi-Fi adaptor included for wireless or wired network connectivity
4Kfull HD 1080p video up scaling from analog and HDMI inputs
YPAO auto-calibration optimizes sound for any room
Yamaha TSR-6750WABL-R Factory Refurbished 7.2-Channel Network Receiver with Wi-Fi Adaptor (Black)"