Thanks for asking! The Picture: Both the 55" QN90C and QN85C feature Quantum Matrix Technology with Mini LEDs for hyper-focused brightness and dimming in all the right areas. When stepping up, the QN90C adds Anti-Glare Technology with Ultra Viewing Angle which makes every seat in the house a great one. Engineered to reduce glare and enhance color, this feature delivers a vibrant picture no matter where you sit. The Design: Both models features our elegant & sleek NeoSlim design that’s made to blend into any room. The Sound: Object Tracking Sound+ provides directional, realistic sound that projects from speakers built into all side of both models. When stepping up, the QN90C further adds 70-Watt, 4.2.2 Channel built-in audio.
~ Samsung Specialist