A:Answer Hi Blgi,
Thank you so much for your interest in Sony TVs.
The X800H has HDR compatibility of HDR10, HLG, Dolby Vision, and supports Dynamic Contrast Enhancer, Object-based HDR remaster, contrast enhancement. For the speaker type, it does have Bass Reflex Speaker and X-Balanced Speaker. For stand design, it does have Metal Finished Stand.
The X900H supports 4K HDR Picture Processor X1, X-tended Dynamic Range, NextGen TV and HDMI 2.1 features like VRR, ALLM and 4K120. For the speaker type, it has Acoustic Multi-Audio; Sound Positioning Tweeter, and X-Balanced Speaker. For stand design, it does have Metal Blade Stand.
You can also check the comparison chart for more details. Reference: https://www.sony.com/electronics/tv/t/televisions?view=compare
I hope this helps.
Sincerely,
Erin
