Roku Pro Series 55R8C5 55"

★★★★★ 4.6 (463)

Mini-LED backlighting and QLED technology deliver deep contrast and color, while a 120Hz refresh rate with Dolby Vision IQ ensures fluid, vivid motion. Roku’s platform provides 500+ free live channels and an art mode that transforms the TV into a wall-mounted digital gallery. It’s ideal for cord-cutters and casual gamers wanting a sleek, wall-hugging design, simple smart home integration, and solid picture quality at a budget-friendly price.

Screen 55"
Resolution 3840x2160
Panel QLED
Refresh 120 Hz
HDR Dolby Vision, HDR 10+, Hybrid Log-Gamma (HLG)
smart platform Roku TV
dolby vision はい
dolby atmos はい
Roku Pro Series 55R8C5 55" tv
80 総合スコア
価格 ¥0
現在取り扱いなし

概要

オーナーの声

購入者の評価が時間とともにどう変化したか

独自

顧客が実際にレビューを書いた時期に基づいています。発売当初の高評価が続いたかどうかがわかります。

購入者の評価は一定を保っています
92/100当社のAIによる感情分析信頼度: 中 · 26 件のソース · 2026年5月
1★2★3★4★5★Q3 '25: 4.9★ · 14 レビューQ4 '25: 4.9★ · 42 レビューQ1 '26: 4.8★ · 34 レビューQ2 '26: 4.6★ · 17 レビュー14423417Q3 '25Q4 '25Q1 '26Q2 '26
平均評価満足(4〜5★)不満(1〜2★)バーの高さ = レビュー件数
  1. Q2 202682/1004.7★17 レビュー

    Buyers praise picture quality, value, and Roku integration. A critical review reports a freezing bug after a software update, with unresponsive support.

    • Excellent picture quality, brightness, and color vibrancy.
    • Great value for the price, with many planning to buy more.
    • Seamless Roku integration and easy setup.
    • Software update caused video freezing during Netflix playback.
  2. Q1 202688/1004.8★34 レビュー

    Buyers praise the vibrant picture, impressive built-in sound, and easy Roku interface. A few report freezing issues, motion blur, and poor off-angle viewing.

    • Picture quality is vibrant, sharp, and clear, especially for 4K and gaming.
    • Built-in sound is surprisingly good, often eliminating need for a soundbar.
    • Roku OS is fast, simple, and intuitive with easy setup.
    • Some units freeze requiring unplug; motion blur in fast scenes; poor off-angle viewing.
  3. Q4 202593/1004.9★42 レビュー

    Buyers praise the excellent picture quality, sound, and Roku interface. Some note narrow viewing angles and a heavy build, but overall satisfaction is high.

    • Excellent picture quality with vibrant colors and deep blacks.
    • Built-in speakers deliver impressive sound with strong bass.
    • Roku interface is fast, easy to navigate, and integrates well.
    • Viewing angles are narrow; picture degrades beyond 35-40 degrees.
  4. Q3 202597/1004.9★14 レビュー

    Buyers in Q3 2025 praised the Roku Pro TV for its excellent picture and sound quality, easy setup, and fast UI. A few noted minor bass issues and a learning curve for older users.

    • Excellent picture quality with sharp, clear images and deep blacks.
    • Great sound quality, though bass can struggle at times.
    • Easy setup and intuitive, fast user interface.
    • Some older users find the transition from traditional TV overwhelming.

日付のある顧客レビュー 107 件を暦四半期ごとに集計しています。期間別の分析は英語です。

実証データ

パフォーマンス

パフォーマンス偏差値

HDR 76.8
Audio 85.2
Smart 84.7
ゲーム 88.3
Display 77.8
User Sentiment 91.1
Connectivity 92.7
ユーザー評価 88
Picture Quality 36.7

スペック

全スペック一覧

Display

Size 55"
Resolution 4K
Panel Type QLED
Backlight Full-Array LED
Aspect Ratio 16:9
Curved No

Picture Quality

Contrast Ratio infinite
Motion Tech Variable Refresh Rate (VRR)
Processor Roku Smart Picture Max

HDR

HDR Formats Dolby Vision, HDR 10+, Hybrid Log-Gamma (HLG)
Dolby Vision Yes
HDR10+ Yes
HLG Yes

Gaming

Refresh Rate 120 Hz
VRR FreeSync Premium Pro, VRR
ALLM Yes
Game Mode Yes

Smart TV

Platform Roku TV
Voice Assistant Not Applicable, Not Applicable
Screen Mirroring Apple AirPlay 2, Miracast
Works With Apple Home, Amazon Alexa, Google Home

Audio

Speaker Config 4
Dolby Atmos Yes
Surround Sound Dolby Atmos, Dolby Audio
eARC Yes

Connectivity

HDMI Ports 4
HDMI Version 2.1
USB Ports 2
Wi-Fi Wi-Fi 6
Bluetooth 5.2
Ethernet Yes
Optical Audio Yes
VESA Mount 200x200

Power & Size

Power 235
Energy Star No
Annual Energy 238
Weight 18.6 kg / 40.9 lbs

競合製品との比較

Spec Roku Pro Series 55R8C5 55" Sony BRAVIA 9 K85XR90 Samsung Neo QLED QN75QN990FFXZA Hisense U8 Series 100U8QG LG G4 Series OLED65G4SUB TCL QM6K Series 55QM6K
Screen Size 55 85 75 99.5 65.0999984741211 55
Resolution 3840x2160 3840x2160 7680x4320 3840x2160 3840x2160 3840x2160
Panel Type QLED Mini-LED QD-Mini-LED Mini-LED OLED QLED
Refresh Rate 120 120 120 165 120 144
Hdr Dolby Vision, HDR 10+, Hybrid Log-Gamma (HLG) HDR 10, Hybrid Log-Gamma (HLG), Dolby Vision HDR10, HDR10+, HLG Dolby Vision, HDR 10+, HDR 10, Hybrid Log-Gamma (HLG) Dolby Vision, HDR 10, Hybrid Log-Gamma (HLG) Dolby Vision, HDR10+, HDR10, HLG
Smart Platform Roku TV Google TV Tizen Google TV webOS Google TV
Dolby Vision true true false true true true
Dolby Atmos true true true true true true
Hdmi Version 2.1 2.1 2.1 2.1 2.1 2.1
Compare Compare Compare Compare Compare
製品 HDRAudioSmartゲームDisplayUser SentimentConnectivityユーザー評価Picture Quality
Roku Pro Series 55R8C5 55" 76.885.284.788.377.891.192.78836.7
Sony BRAVIA 9 K85XR90 Compare 76.896.991.679.394.565.392.78879.7
Samsung Neo QLED QN75QN990FFXZA Compare 85.199.584.788.399.665.399.999.985.2
Hisense U8 Series 100U8QG Compare 91.598.295.795.194.597.9867798.8
LG G4 Series OLED65G4SUB Compare 76.898.895.799.291.697.998.68836.7
TCL QM6K Series 55QM6K Compare 98.788.197.593.477.87988.98898.7

用途別スコア

総合 (80)Budget (72.2)ゲーム (71.2)Movies (60.1)Sports (69.8)Outdoor (47.1)Portable (47.1)Corporate (64.6)Streaming (74)Smart Home (76.9)

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