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Roku 75R4A5R 75" specifications and in-depth review

Roku 75R4A5R 75"

Manufacturer: Roku

The Roku 75R4A5R is a large-screen television built around a 74.5-inch LED-backlit LCD panel that delivers 4K UHD resolution at 3840x2160 pixels. The set runs Roku's built-in smart TV platform, offering voice command support, AirPlay compatibility, and integration with both Google Assistant and Amazon Alexa, alongside a browser and smartphone remote functionality.

On the display side, the 75R4A5R covers a wide color output of 1.07 billion colors through a 10-bit panel with a 59 ppi pixel density, and it supports HDR10, HDR10+, Dolby Vision, and HLG for broad high dynamic range compatibility. Connectivity is handled through four HDMI 2.0 ports — one of which supports eARC — along with a single USB port, an RJ45 Ethernet jack, Wi-Fi 5, and a 3.5mm headphone output. Audio playback includes stereo speakers with Dolby Audio support and a Digital Out connection, while the 178-degree horizontal and vertical viewing angles and built-in ambient light sensor round out the feature set.

Pros
  • Supports all four major HDR formats — HDR10, HDR10+, Dolby Vision, and HLG — covering a wide range of content sources
  • Four HDMI 2.0 ports provide ample input options for connecting multiple devices simultaneously
  • Both HDMI ARC and eARC are available, simplifying audio output to external sound systems
  • Built-in smart TV platform includes AirPlay, Google Assistant, Alexa, voice commands, a browser, sleep timer, and child lock in one package
  • Anti-reflection coating and an ambient light sensor help maintain picture clarity in varying room lighting conditions
  • Wide 178-degree viewing angles horizontally and vertically allow flexible seating arrangements
Cons
  • Refresh rate is limited to 60Hz with no adaptive synchronization support, which may affect fast-motion content
  • No Bluetooth connectivity, limiting wireless audio accessory options
  • Only one USB port available, restricting simultaneous peripheral connections
  • The remote control is not rechargeable, requiring regular battery replacement
  • Siri and Apple HomeKit are not supported despite AirPlay being present
  • No external memory slot, preventing direct local storage expansion
Who is this for?

This TV is a solid fit for home viewers who want a large-screen 4K viewing experience in a dedicated living room or media room setup. The full suite of HDR format support — HDR10, HDR10+, Dolby Vision, and HLG — makes it well-suited for users who consume content across a variety of streaming platforms and disc-based sources. With four HDMI ports, HDMI eARC, built-in smart TV functionality, AirPlay, and voice assistant compatibility, it also works well for households that rely on multiple connected devices and smart home ecosystems. The wide 178-degree viewing angles and ambient light sensor make it a practical choice for rooms with flexible seating or varying lighting conditions.

Who is this NOT for?

Users who prioritize smooth motion in fast-paced content will find the 60Hz refresh rate with no adaptive synchronization a limiting factor, making this TV a poor match for dedicated gaming setups or sports viewing where motion clarity is important. The absence of Bluetooth means it is not well-suited for those who rely on wireless headphones or audio accessories without additional adapters. Additionally, with only a single USB port and no external memory slot, users who regularly connect peripherals or rely on local media storage will find the connectivity options restrictive for those specific workflows.

Display:

display resolution 4K (UHD)
Display type LED-backlit, LCD
screen size 74.5"
resolution 3840 x 2160 px
pixel density 59 ppi
display colors 1070 million
bit depth 10-bit
refresh rate 60Hz
supports HDR10 ✓
supports HDR10+ ✓
supports Dolby Vision ✓
supports HLG ✓
Adaptive synchronization None
has anti-reflection coating ✓
has an ambient light sensor ✓
maximum horizontal viewing angle 178º
maximum vertical viewing angle 178º

The Roku 75R4A5R features a 74.5-inch LED-backlit LCD panel with a 4K UHD resolution of 3840x2160 pixels and a pixel density of 59 ppi, rendering up to 1.07 billion colors through a 10-bit panel. It supports a broad range of HDR formats — including HDR10, HDR10+, Dolby Vision, and HLG — though adaptive synchronization is not available. The display refreshes at 60Hz and includes an anti-reflection coating along with an ambient light sensor for automatic brightness adjustment. Both the horizontal and vertical viewing angles reach 178 degrees, and no adaptive sync technology is present.

Connectivity:

Has Bluetooth ✕
HDMI version HDMI 2.0
HDMI ports 4
supports Wi-Fi ✓
Wi-Fi version Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
USB ports 1
RJ45 ports 1
supports Miracast ✓
has a socket for a 3.5 mm audio jack ✓
has an external memory slot ✕
has a VGA connector ✕
has a DVI connector ✕

The Roku 75R4A5R offers a solid wired and wireless connectivity setup, including four HDMI 2.0 ports, one USB port, and a single RJ45 Ethernet jack for a direct network connection. Wireless networking is handled via Wi-Fi 4 (802.11n) and Wi-Fi 5 (802.11ac), and the TV supports Miracast for screen mirroring. A 3.5mm headphone jack is also present for private listening. Bluetooth, an external memory slot, and VGA and DVI connectors are not included.

Audio:

has DTS Surround ✕
supports Digital Out ✓
has SRS TheaterSound HD ✕
has stereo speakers ✓
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 Roku 75R4A5R is equipped with stereo speakers and supports Dolby Audio, while Digital Out is available for routing audio to an external system. The TV also includes both HDMI ARC and HDMI eARC, enabling simplified audio passthrough to compatible soundbars or receivers. DTS formats — including DTS Surround, DTS-HD Master Audio, DTS-HD High Resolution, and DTS:X — are not supported, nor are SRS TheaterSound HD, Dolby Virtual, or a built-in subwoofer.

Design:

width 1673.9 mm
weight 23042 g
thickness 76.2 mm
height 967.7 mm
volume 123431.276886 cm³
Supports VESA mount ✓

The Roku 75R4A5R measures 1673.9 mm wide, 967.7 mm tall, and 76.2 mm thick, with a total volume of approximately 123,431 cm³. It weighs 23,042 g and supports VESA mounting for wall installation.

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 ✕
standby power consumption 0.5W
has a search browser ✓
has a sleep timer ✓
has a child lock ✓
has voice commands ✓

The Roku 75R4A5R comes with a built-in smart TV platform and supports AirPlay, voice commands, and compatibility with both Google Assistant and Amazon Alexa, though Siri and Apple HomeKit are not supported. A built-in browser, sleep timer, and child lock are included, and the TV can be controlled via a smartphone acting as a remote. The remote control itself is not rechargeable, and standby power consumption is rated at 0.5W.

Miscellaneous:

has a front camera ✕
Final Verdict

The Roku 75R4A5R is a well-rounded 75-inch 4K television that covers the essentials for a capable living room setup. Its comprehensive HDR format support across HDR10, HDR10+, Dolby Vision, and HLG, combined with a feature-rich smart platform that includes AirPlay, voice assistant integration, and four HDMI ports, makes it a practical choice for households looking for versatile connectivity and broad content compatibility. That said, the 60Hz refresh rate and absence of adaptive sync or Bluetooth do place it outside the consideration set for gaming-focused or wireless-audio-dependent users. For viewers whose primary focus is everyday streaming and multi-device home entertainment on a large screen, the Roku 75R4A5R delivers a solid and coherent package.