Sony

Sony XBR55A8F 55-Inch 4K OLED Smart TV (2018)

3.8 (113 reviews)
4KHDR

Sony 55-inch 4K OLED smart TV with X1 Extreme processor, Acoustic Surface sound, and built-in Google Assistant.

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Overview

The Sony XBR55A8F belongs to Sony's premium BRAVIA OLED lineup, built around a 55-inch 4K Ultra HD OLED panel with 8 million self-illuminating pixels. Unlike LED-backlit TVs that rely on a backlight to produce brightness, each pixel on this OLED panel generates its own light and can turn off completely, achieving perfect black levels and essentially infinite contrast. Sony's 4K HDR X1 Extreme processor manages the image pipeline, handling tone mapping, color accuracy, and upscaling of lower-resolution content to near-4K clarity. The result is a picture with natural skin tones, rich shadow detail, and vivid highlights that does justice to HDR movies and streaming content.

What sets the A8F apart from competing OLEDs is Sony's Acoustic Surface technology. Instead of conventional downward- or rear-firing speakers, actuators mounted behind the panel cause the screen itself to produce sound, creating the unusual and effective sensation of audio emanating directly from the characters and objects on screen. The 120Hz refresh rate keeps motion smooth and blur-free across fast-paced sports, action sequences, and gaming. On the smart side, Android TV powers the interface with access to a wide app library, while built-in Google Assistant and Amazon Alexa compatibility provide voice control for content search, playback, and smart home management. Wireless screen mirroring via Miracast rounds out the connectivity for Android and iOS users.

Key Features

PREMIUM 4K HDR: X1 Extreme Processor delivers IMAX quality for an enhanced movie and show experience

OLED IMAGING: 8 million self-illuminating pixels achieve the perfect black for stunningly real color

NO BLUR ACTION: 120Hz refresh rate combined with OLED delivers lifelike, fast moving action scenes

SOUND REVOLUTION: Innovative Acoustic Surface technology emanates crisp sound from the entire screen

SMARTPHONE CONNECTIVITY: Use wifi to sync your Android / iOS devices for Miracast and video SideView

GENIUS TV: Sync with Amazon Alexa or use the built-in Google Assistant to achieve maximum control

IN THE BOX: Smart remote, batteries, power cord, IR Blaster, instructions, setup guide and stand

DIMENSIONS: With Stand (W x H x D) 48 3/8 x 28 1/4 x 10 1/8 inches, without Stand (W x H x D) 48 3/8 x 28 1/8 x 2 1/4 inches

Specifications

Display Size
55 inches
Display Type
OLED
Resolution
4K Ultra HD
Processor
4K HDR X1 Extreme
Refresh Rate
120Hz
Sound Technology
Acoustic Surface
Smart Features
Built-in Google Assistant, Amazon Alexa compatible
Connectivity
Wi-Fi, Miracast, Video SideView
Ports
HDMI, USB
Dimensions (with stand)
48 3/8 x 28 1/4 x 10 1/8 inches (W x H x D)
Dimensions (without stand)
48 3/8 x 28 1/8 x 2 1/4 inches (W x H x D)
In the Box
Smart remote, batteries, power cord, IR Blaster, instructions, setup guide, stand

Pros & Cons

👍 Pros

  • OLED panel with 8 million self-illuminating pixels produces perfect blacks and infinite contrast
  • Acoustic Surface technology turns the entire screen into a speaker for spatially accurate sound
  • X1 Extreme processor delivers premium HDR processing and upscaling for non-4K content
  • 120Hz refresh rate provides smooth, blur-free motion for sports and action scenes
  • Built-in Google Assistant and Alexa compatibility offer hands-free smart TV control

👎 Cons

  • As a 2018 model, it lacks newer HDMI 2.1 features such as VRR and 4K 120Hz input for gaming
  • OLED panels carry a risk of image retention or burn-in with prolonged static content display
  • At 55 inches, it is the smaller option in the A8F lineup with no larger size in this specific model
  • The included stand has a wide 10 1/8-inch depth footprint, requiring a deep enough surface
  • Smart TV platform may no longer receive the latest app updates as the model ages

Frequently Asked Questions

Acoustic Surface is Sony's proprietary sound system that uses actuators behind the OLED panel to vibrate the screen itself, producing sound that appears to come directly from the on-screen action rather than from speakers below or behind the TV.
Yes, the XBR55A8F supports 4K HDR content processing through its X1 Extreme processor, delivering enhanced brightness, contrast, and color for HDR-compatible sources.
The TV has Google Assistant built in and is also compatible with Amazon Alexa. You can use voice commands to search content, control playback, adjust settings, and manage other smart home devices.
The TV features a 120Hz refresh rate, which combined with the OLED panel's near-instant pixel response time, delivers smooth, blur-free motion during fast-paced content like sports and action movies.
With the stand, the TV measures 48 3/8 x 28 1/4 x 10 1/8 inches (W x H x D). Without the stand, it measures 48 3/8 x 28 1/8 x 2 1/4 inches, making it exceptionally slim for wall mounting.