Sony Bravia K-77XR80 77"

Name: Sony Bravia K-77XR80 77"
Brand: Sony
SKU: 6176

Manufacturer: Sony

The Sony Bravia K-77XR80 is a 76.7-inch OLED television operating at a native 4K resolution of 3840 x 2160 pixels with a 120Hz refresh rate and a 10-bit panel capable of reproducing up to 1.07 billion colors. Its OLED display technology enables wide viewing angles of 178 degrees both horizontally and vertically, and the panel is complemented by an anti-reflection coating and an ambient light sensor for adapting to different room conditions. HDR support spans HDR10, Dolby Vision, and HLG, covering most widely used formats in streaming and physical media.

The K-77XR80 is equipped with four HDMI 2.1 ports, two USB ports, an RJ45 Ethernet port, and Wi-Fi 6 (802.11ax) alongside Bluetooth 5.3 and Miracast for wireless screen sharing. Its audio system includes a built-in subwoofer alongside stereo speakers, with format support covering Dolby Atmos, Dolby Digital Plus, DTS:X, and DTS-HD Master Audio, as well as both HDMI ARC and eARC outputs. The smart platform integrates Chromecast, AirPlay, and compatibility with Google Assistant, Amazon Alexa, and Siri via Apple HomeKit, rounded out by a rechargeable remote, USB recording, voice commands, a sleep timer, a child lock, and a one-year warranty. Operating power consumption is rated at 597W with a 0.5W standby draw, and VESA mounting is supported for wall installation.

Pros

The OLED panel delivers 178-degree viewing angles both horizontally and vertically, ensuring consistent image quality from a wide range of seating positions
HDR format coverage includes Dolby Vision, HDR10, and HLG, accommodating the most widely used high dynamic range standards in streaming and physical media
A built-in subwoofer supplements the stereo speakers, providing low-frequency audio reproduction without immediately requiring an external sound system
Four HDMI 2.1 ports accommodate multiple high-bandwidth devices simultaneously, making it well suited for setups with several source devices
Compatibility with Google Assistant, Amazon Alexa, and Siri via Apple HomeKit allows the TV to fit into virtually any existing smart home ecosystem
At 38 mm thick and 34 kg, the set is notably slim and comparatively manageable in weight for a 76.7-inch screen, simplifying wall mounting with VESA support

Cons

HDR10+ is not supported, limiting compatibility with content specifically encoded in that format
Operating power consumption is rated at 597W, which is notably high for regular daily use
No 3.5 mm headphone jack is present, making direct wired private listening impossible without additional hardware
There is no external memory slot, so local media playback is restricted to content accessed via the two USB ports
No audio output power figure is specified for the built-in speaker system, making it difficult to assess the overall output capability from the provided data

Who is this for?

The Sony Bravia K-77XR80 is well suited to home theater enthusiasts who want a large OLED screen with wide viewing angles and broad HDR compatibility, including Dolby Vision and HDR10, for an immersive movie and streaming experience across varied seating arrangements. The four HDMI 2.1 ports make it a practical choice for users running multiple source devices such as gaming consoles and media players simultaneously, while the built-in subwoofer and comprehensive Dolby Atmos and DTS:X support offer a more complete audio experience without immediately requiring external speakers. Users embedded in smart home ecosystems will also find it accommodating, given its simultaneous compatibility with Google Assistant, Amazon Alexa, and Apple HomeKit.

Who is this NOT for?

Users who need to connect legacy equipment may find the absence of a VGA, DVI, or 3.5 mm headphone jack limiting, as wired private listening is not possible without additional hardware. Those who are particularly sensitive to power consumption should note the 597W operating draw, which may be a practical concern for prolonged daily use. The television also lacks HDR10+ support, so viewers with content libraries or services that rely specifically on that format will not get full compatibility, and the absence of an external memory slot restricts local media playback to content accessed exclusively through the two available USB ports.

Display:

display resolution	4K (UHD)
Display type	OLED/AMOLED
screen size	76.7"
resolution	3840 x 2160 px
pixel density	57 ppi
display colors	1070 million
bit depth	10-bit
refresh rate	120Hz
supports HDR10	✓
supports HDR10+	✕
supports Dolby Vision	✓
supports HLG	✓
has anti-reflection coating	✓
has an ambient light sensor	✓
maximum horizontal viewing angle	178º
maximum vertical viewing angle	178º

The Sony Bravia K-77XR80 uses a 76.7-inch OLED panel with a 4K resolution of 3840 x 2160 pixels, a pixel density of 57 ppi, and a 10-bit color depth capable of rendering up to 1.07 billion colors. The display runs at 120Hz and supports HDR10, Dolby Vision, and HLG, though HDR10+ is absent. Viewing angles extend to 178 degrees both horizontally and vertically, an anti-reflection coating is applied to the screen surface, and an ambient light sensor allows the panel to adjust to the surrounding environment automatically.

Connectivity:

Has Bluetooth	✓
HDMI version	HDMI 2.1
HDMI ports	4
supports Wi-Fi	✓
Wi-Fi version	Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax)
Bluetooth version	5.3
USB ports	2
RJ45 ports	1
supports Miracast	✓
has a socket for a 3.5 mm audio jack	✕
has an external memory slot	✕
has a VGA connector	✕
DVB standards	DVB-T, DVB-T2, DVB-C, DVB-S, DVB-S2
has a DVI connector	✕

Wired connectivity includes four HDMI 2.1 ports, two USB ports, and a single RJ45 Ethernet port, while wireless options cover Wi-Fi 4, Wi-Fi 5, and Wi-Fi 6 (802.11ax) alongside Bluetooth 5.3 and Miracast for screen mirroring. Broadcast reception spans DVB-T, DVB-T2, DVB-C, DVB-S, and DVB-S2, accommodating a wide range of terrestrial, cable, and satellite services. A 3.5 mm headphone jack, external memory slot, VGA connector, and DVI connector are all absent from the connection lineup.

Audio:

supports Dolby Digital	✓
has DTS Surround	✓
supports Digital Out	✓
supports Dolby Digital Plus	✓
has SRS TheaterSound HD	✕
has stereo speakers	✓
has Dolby Atmos	✓
has DTS-HD Master Audio	✓
has Dolby Audio	✓
supports Dolby Virtual	✕
has a subwoofer	✓
has a DTS-HD High Resolution	✓
has DTS:X	✓
HDMI ARC / eARC	HDMI ARC, HDMI eARC

The audio system includes stereo speakers and a built-in subwoofer, with digital output supported alongside both HDMI ARC and HDMI eARC for connecting external audio equipment. Format support is broad, covering Dolby Atmos, Dolby Digital, Dolby Digital Plus, and Dolby Audio on the Dolby side, and DTS:X, DTS Surround, DTS-HD Master Audio, and DTS-HD High Resolution Audio on the DTS side. Dolby Virtual and SRS TheaterSound HD are not supported.

Design:

width	1713 mm
weight	34000 g
thickness	38 mm
height	984 mm
volume	64052.496 cm³
Supports VESA mount	✓
maximum operating temperature	40 °C
lowest potential operating temperature	0 °C

The television measures 1713 mm wide, 984 mm tall, and just 38 mm thick, giving it a notably slim profile for a large-screen set, with a total volume of 64052.496 cm³ and a weight of 34 kg. VESA mounting is supported, making wall installation straightforward. The unit is rated to operate within a temperature range of 0 °C to 40 °C, suitable for standard indoor environments.

Features:

has Chromecast built-in	✓
has AirPlay	✓
has built-in smart TV	✓
compatible with Google Assistant	✓
works with Alexa	✓
works with Siri/Apple HomeKit	✓
supports a remote smartphone	✓
has a rechargeable remote control	✓
supports USB recording	✓
operating power consumption	597W
standby power consumption	0.5W
has a search browser	✓
has a sleep timer	✓
has a child lock	✓
warranty period	1 years
has voice commands	✓

The K-77XR80 operates as a full smart TV with a built-in browser, Chromecast, and AirPlay, and is compatible with all three major voice assistant platforms — Google Assistant, Amazon Alexa, and Siri via Apple HomeKit — with voice commands supported directly on the set. A rechargeable remote is included, and a smartphone can also serve as a remote control. USB recording is available for capturing live broadcast content, and additional conveniences include a sleep timer and a child lock. Operating power consumption is rated at 597W with a minimal standby draw of 0.5W, and the television is covered by a one-year warranty.

Miscellaneous:

has a front camera	✕

Final Verdict

The Sony Bravia K-77XR80 brings together a 76.7-inch OLED panel, comprehensive HDR format support, and a full smart platform with cross-ecosystem voice assistant compatibility into a cohesive large-screen package. Its Dolby Atmos and DTS:X audio system with a built-in subwoofer, combined with four HDMI 2.1 ports and a notably slim 38 mm profile, make it a well-rounded choice for dedicated home theater use. Certain constraints — including the absence of HDR10+, a headphone jack, and a high operating power draw — mean it will not suit every user equally, but for those building a serious living room setup around OLED picture quality and broad smart home integration, the K-77XR80 stands as a thorough and capable option.