Sony KD55XF8577 Review

Today we will go through the Sony KD55XF8577 review. The Sony KD55XF8577 review is structured in five sections.

Sony KD55XF8577 Specs

Screen size: 55″
Display Type: LCD
Display Resolution: 3840 x 2160
Backlight Type: Edge LED
Backlight Dimming Type: Frame Dimming
HDR (High Dynamic Range) Compatibility: Yes (HDR10, HLG)
Picture Processor: 4K HDR Processor X1™
Clarity Enhancement: 4K X-Reality™ PRO
Live Color™ Technology: Yes
Super bit mapping™ 4K HDR: Yes
TRILUMINOS™ Display: Yes
Dynamic Contrast Enhancer: Yes
Object-based HDR remaster: Yes
Motion Enhancer (Native HZ): Motionflow™ XR 1000 (native 100 Hz)
HEVC Support: Yes (Up to 3840×2160/60p 10bit)
Operating System: Android™
On-Board Storage: 16 GB
Content Bar: Yes
Voice Search: Yes
Internet Browser: Vewd
Application Store: Yes (Google Play Store)
USD HDD Recording: Yes
Number of tuners: 2(Digital)/1(Analog)
Digital Receiver: DVB- T/T2/C/S/S2
Audio Power Output: 10W + 10W
Speaker Type: Bass Reflex Speaker
Dolby Audio Format Support: Dolby™ Digital, Dolby™ Digital Plus, Dolby™ Pulse
DTS Audio Format Support: DTS Digital Surround
Sound Processing: ClearAudio+
Simulated Surround Sound: S-Force Front Surround
WI-FI Standard: Wi-Fi Certified 802.11a/b/g/n/ac
Ethernet Inputs: 1 (Side)
Bluetooth Profile Support: Version 4.1; HID (mouse/keyboard connectivity)/HOGP (low-energy device connectivity)/SPP(Serial Port Profile)/A2DP (stereo audio) 2/AVRCP (AV remote control)
Chromecast built-in: Yes
Screen mirroring (Miracast™): Yes
Video & TV SideView (iOS/Android): Yes
RF (Terrestrial/Cable) Connection Input(s): 1 (Side)
Component Video (Y/PB/PR) Input(s): 1 (Rear Hybrid with Composite)
Composite Video Input(s): 1 (Rear Hybrid with Component)
HDMI Inputs Total: 4 (3 side, 1 rear)
HDCP: HDCP2.2 (for HDMI™ 1/2/3/4)
HDMI Audio Return Channel (ARC): Yes
IF (Satellite) Connections: 2 (Side)
Digital Audio Output(s): 1 (rear)
Audio/Headphone Output(s): 1
USB Ports: 3 (side)

Picture Quality

Sony KD55XF8577 has a very good picture quality thanks to the 4k resolution. The HDR (High Dynamic Range) technology provides colorful images and is very important when playing games or watching colorful content. However, we have bad news for the movie lovers because this TV doesn’t have local dimming. The lack of local dimming means that the black color depth and uniformity are not so good and that makes the movie watching experience less enjoyable. But at least has frame dimming technology which compensates a little for the lack of local dimming tech. The colors look good too thanks to the live color technology and TRILUMINOS™ display. So if you planning to watch mostly HDR content and sacrifice the lack of deep black colors this TV might be the right TV for you. We will give 4/5 points for the Sony KD55XF8577 review part of the picture quality.


Sony KD55XF8577 is a smart TV so you can connect it to the internet and browse online content. The connection can be established through the integrated wireless module or through the Ethernet port. The Vewd browser is light which makes it a reasonable choice for TV implementation. Also this TV has the Android OS which had always been a strong part of Sony TVs. Android OS has more features than any other OS, plus it has the Google play store where you can find many useful apps. The 16GB on-board storage is sufficient unless you plan to store many movies in it. Anyway, you can share your smartphone’s screen easily with the TV through the Miracast technology or Chromecast. We will give 5/5 points for the Sony KD55XF8577 review part of the features.


Sony KD55XF8577 has two built-in speakers with 10W power each. The total output power of 20W is usually enough, unless you are standing too far from the TV. If this is the case you should consider buying external speakers that will turn your room into a home theater. If you are planning to buy external speakers you can also take advantage of the surround sound mode. The sound is clear thanks to the Clear Audio+ technology, but that depends on the content quality. We will give 4/5 points for the Sony KD55XF8577 review part of the sound.


Sony KD55XF8577 has generally a good design. The color looks good and the frame is thin. Also most of the connection ports are on the side so there will be no problem if you wall-mount it. However, the feet are a little wide so you will need a wide steady place to put the TV. We will give 4.5/5 points for the Sony KD55XF8577 review part of the design.


The price was £899 as of August 2018 which is not a bad price. We will give 4.5/5 points for the Sony KD55XF8577 review part of the price.

Sony KD55XF8577 Review Conclusions

This TV is generally a good TV if you plan to use it for watching HDR content. It doesn’t have local dimming so the movie watching experience won’t be that good. However, it does have the Android OS which is a really strong feature of Sony’s TVs. There are also no special features except the basic ones like Chromecast and Miracast that are useful. But it also supports BT HID which enables you to connect a keyboard and a mouse to the TV to make the browsing and gaming experience better. The sound is loud and clear but that also depends on the content quality. The price is good too but that is always a matter of perspective. We hope that our Sony KD55XF8577 review has been helpful.

Should I buy Sony KD55XF8577?

We made the Sony KD55XF8577 review because this is a very good TV. However you may also want to take a look at this other TV LG 55SK8000PLB.

Picture Quality


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