Samsung QN77S90DAF 77"

Name: Samsung QN77S90DAF 77"
Brand: Samsung
SKU: 2817

Manufacturer: Samsung

The Samsung QN77S90DAF is a 76.8-inch OLED television offering a 3840 x 2160 pixel 4K image with a 10-bit panel capable of reproducing around 1.07 billion colors. Built around OLED display technology, it includes an ambient light sensor, an anti-reflection coating, and 178-degree viewing angles both horizontally and vertically. The set comes with built-in smart TV functionality, AirPlay, voice command support, Google Assistant and Alexa compatibility, a rechargeable remote, and smartphone-based remote control, covering a broad range of everyday smart features.

The display runs at 120Hz and supports AMD FreeSync Premium Pro alongside standard FreeSync and FreeSync Premium for adaptive synchronization. HDR compatibility includes HDR10, HDR10+, and HLG, though Dolby Vision is not supported. Audio is handled by a stereo speaker system with a built-in subwoofer, supporting Dolby Atmos, Dolby Digital, Dolby Digital Plus, and Dolby Audio, with both HDMI ARC and eARC available for external audio routing. The connectivity layout includes four HDMI 2.1 ports, two USB ports, one RJ45 port, Wi-Fi 5, Bluetooth 5.2, and Miracast, alongside a full set of DVB tuner standards covering DVB-T, DVB-T2, DVB-C, DVB-S, and DVB-S2.

Pros

The OLED panel delivers a 120Hz refresh rate with AMD FreeSync Premium Pro support, making it well-suited for gaming with adaptive sync across a wide range of frame rates
Four HDMI 2.1 ports provide broad connectivity for multiple high-bandwidth devices, with both ARC and eARC available for external audio systems
The built-in audio system includes a subwoofer and supports Dolby Atmos, giving it more low-frequency output and spatial audio capability than a typical flat speaker array
HDR10, HDR10+, and HLG are all supported alongside an anti-reflection coating and a 178-degree viewing angle, accommodating varied lighting conditions and room layouts
Smart features cover Google Assistant, Alexa, AirPlay, voice commands, USB recording, a built-in browser, and a rechargeable remote, handling most daily smart TV tasks without additional hardware

Cons

Dolby Vision is not supported, which excludes a major HDR format widely used across streaming platforms and physical media
Wi-Fi is limited to Wi-Fi 5, with no Wi-Fi 6 support, which may be a drawback in households with newer networking equipment
DTS:X, DTS Surround, and DTS-HD formats are all absent, limiting compatibility with certain audio tracks and disc-based content
There is no 3.5 mm headset jack, so wired headphone connection directly to the TV is not possible
Siri and Apple HomeKit are not supported, which reduces smart home integration options for users in the Apple ecosystem

Who is this for?

The Samsung QN77S90DAF is a strong fit for users who want a large-screen television centered around an OLED panel with 120Hz and AMD FreeSync Premium Pro, making it a practical choice for both cinematic viewing and console gaming in a dedicated home theater or living room setup. The four HDMI 2.1 ports with ARC and eARC support suit households with multiple source devices and external audio equipment, while the built-in Dolby Atmos capability and integrated subwoofer offer a more complete audio experience without immediately requiring a separate soundbar. Users who want a full smart TV platform with Google Assistant, Alexa, AirPlay, and voice control built in will find the feature set covers most everyday needs without additional hardware.

Who is this NOT for?

Users who rely on Dolby Vision for HDR content from streaming services or physical media will find this model incompatible with that format, which may be a meaningful limitation depending on their content sources. Those embedded in the Apple ecosystem expecting Siri or HomeKit integration will not find those features available here, reducing its appeal as a smart home hub for Apple-centric setups. Additionally, users who require DTS:X or DTS Surround support for specific audio tracks will find those formats absent, and anyone needing Wi-Fi 6 for faster or more stable wireless performance in a densely networked environment may find the Wi-Fi 5 ceiling restrictive.

Display:

display resolution	4K (UHD)
Display type	OLED/AMOLED
screen size	76.8"
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	✓
Adaptive synchronization	AMD FreeSync, AMD FreeSync Premium, AMD FreeSync Premium Pro
has anti-reflection coating	✓
has an ambient light sensor	✓
maximum horizontal viewing angle	178º
maximum vertical viewing angle	178º

The Samsung QN77S90DAF uses an OLED/AMOLED panel measuring 76.8 inches, producing a 3840 x 2160 pixel 4K image at 57 ppi with 10-bit color depth and approximately 1.07 billion colors. The display operates at a 120Hz refresh rate with adaptive sync support across AMD FreeSync, FreeSync Premium, and FreeSync Premium Pro. HDR coverage includes HDR10, HDR10+, and HLG, though Dolby Vision is not supported. An anti-reflection coating and an ambient light sensor are both fitted, and the panel offers a maximum viewing angle of 178 degrees in both the horizontal and vertical directions.

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)
Bluetooth version	5.2
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	✕

The TV is equipped with four HDMI 2.1 ports, two USB ports, and one RJ45 ethernet jack for wired network access. Wireless connectivity includes Wi-Fi 5 (802.11ac) with Wi-Fi 4 backward compatibility, Bluetooth 5.2, and Miracast for screen mirroring. Broadcast tuning covers DVB-T, DVB-T2, DVB-C, DVB-S, and DVB-S2 standards. There is no 3.5 mm headset jack, no external memory card slot, and no VGA or DVI connector on this model.

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 built-in audio system includes stereo speakers with a dedicated subwoofer, and supports Dolby Atmos, Dolby Digital, Dolby Digital Plus, and Dolby Audio, covering a solid range of Dolby-based formats. Digital audio output is available, and both HDMI ARC and eARC are present for routing audio to external equipment. DTS Surround, DTS:X, DTS-HD High Resolution, DTS-HD Master Audio, SRS TheaterSound HD, and Dolby Virtual are not supported on this model.

Design:

width	1719.6 mm
weight	36605 g
thickness	45.7 mm
height	980.4 mm
volume	77045.439888 cm³
Supports VESA mount	✓
maximum operating temperature	40 °C
lowest potential operating temperature	10 °C

The Samsung QN77S90DAF measures 1719.6 mm wide, 980.4 mm tall, and 45.7 mm thick, with a total volume of approximately 77,045 cm³ and a weight of 36,605 g. The set supports VESA mounting for wall installation and is rated to operate within a temperature range of 10 °C to 40 °C.

Features:

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	✓
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 TV includes built-in smart TV functionality with a web browser, sleep timer, child lock, USB recording support, and voice command capability. It is compatible with both Google Assistant and Alexa, and AirPlay is built in, though Siri and Apple HomeKit are not supported. The remote control is rechargeable, and smartphone-based remote control is also available. Standby power consumption is rated at 0.5W, and the unit comes with a one-year warranty.

Miscellaneous:

has a front camera	✕

Final Verdict

The Samsung QN77S90DAF is a well-specified 76.8-inch OLED television that brings together a strong display foundation and a capable smart platform in a single package. Its combination of 120Hz OLED with AMD FreeSync Premium Pro makes it genuinely versatile across both cinematic content and gaming, while four HDMI 2.1 ports, Dolby Atmos support, a built-in subwoofer, and a broad smart feature set give it enough depth to serve as a primary entertainment hub without heavy reliance on external accessories. The absence of Dolby Vision and certain DTS audio formats means it will not satisfy every format requirement, and users tied to the Apple ecosystem will find HomeKit integration missing. For viewers who can work within those boundaries, the QN77S90DAF represents a technically cohesive large-format television with few meaningful gaps in its core specification set.