Denon & Marantz announce new HDMI 2.1 receivers, upgrade program - FlatpanelsHD
Sound United Announces HDMI 2.1 8K Upgrades and AVR-X8500H"A" and Marantz AV8805"A" AV Receivers | Audioholics
Amazon.com: BIFALE 8K Fiber HDMI Cable 40ft, (in-Wall Rated) HDMI 2.1 Fiber Optic Cable Support 8K@60Hz, 4K@120Hz, 48Gbps, eARC Compatible with PS5/4, Xbox Series X, RTX 3080/3090, Denon AV Receiver and More :
Denon and Marantz will add HDMI 2.1 to these older receivers for $600
Denon AVR S760H 7.2ch 8K AV Receiver | Costco
Denon AVR-X3800H – Dreamedia AV
AVS-3 - 3 In/1 Out HDMI Switcher - Switcher for up to three 8K devices connected to select 8K AV Receivers. | Denon - US