Hisense A6K 55" (UHD LED) vs TCL 5-Series S555 65" (QLED)
The Verdict
Hisense A6K offers exceptional value at $329 for a 55-inch 4K TV with solid HDR support and Alexa integration, making it ideal for budget-conscious buyers seeking basic smart TV functionality. TCL 5-Series S555 ($599) delivers substantially more performance with its 65-inch QLED panel, 800-nit brightness versus 350 nits, 120Hz refresh rate with VRR/ALLM for gaming, and superior audio at 24W. Gaming performance heavily favors TCL with 8ms input lag compared to Hisense's 14ms. Google TV's content ecosystem outpaces VIDAA U6, while Wi-Fi 6 and additional HDMI ports enhance connectivity. Choose Hisense A6K for basic streaming and budget constraints; select TCL 5-Series S555 for gaming, brighter visuals, larger screen real estate, and modern features worth the $270 premium.
Who Should Buy
Buy the Hisense A6K 55" (UHD LED) if…
- →55-inch 4K at $329 is one of the cheapest large-screen TVs available
- →Dolby Vision and HDR10+ support at a budget price is impressive
- →VA panel provides decent contrast for the price
Buy the TCL 5-Series S555 65" (QLED) if…
- →65-inch 4K with 120Hz and VRR at $599 is outstanding value
- →Both Dolby Vision and HDR10+ support — rare at this price
- →QLED color enhancement produces vivid, saturated colors
Category Scores
Pros & Cons
Hisense A6K 55" (UHD LED)
Pros
- 55-inch 4K at $329 is one of the cheapest large-screen TVs available
- Dolby Vision and HDR10+ support at a budget price is impressive
- VA panel provides decent contrast for the price
- Lightweight at 25.4 lbs — easy to handle and wall-mount
- Alexa built-in for voice control without an external device
Cons
- 60Hz panel with no VRR — not suited for gaming
- 350 nits is very dim — HDR is essentially non-functional
- VIDAA OS has a limited app selection compared to Google TV
- 16W audio is weak and tinny — external speakers are mandatory
- No HDMI 2.1 or Dolby Atmos
TCL 5-Series S555 65" (QLED)
Pros
- 65-inch 4K with 120Hz and VRR at $599 is outstanding value
- Both Dolby Vision and HDR10+ support — rare at this price
- QLED color enhancement produces vivid, saturated colors
- Wi-Fi 6 and four HDMI ports (one HDMI 2.1) handle modern setups
- Google TV platform with Chromecast built-in
Cons
- Only 1 HDMI 2.1 port — the other 3 are HDMI 2.0
- 800 nits is decent but not as impressive as the 6-Series
- No Dolby Atmos — audio is basic
- Edge-lit local dimming with limited zones shows blooming
Full Specifications
| Spec | Hisense A6K 55" (UHD LED) | TCL 5-Series S555 65" (QLED) |
|---|---|---|
| Body | ||
| VESA mount | 200 x 200mm | 300 x 300mm |
| Weight | 25.4 lbs | 42.3 lbs |
| Dimensions | 48.4 x 28.1 x 3.2 inches | 57.2 x 33.0 x 3.2 inches |
| Dimensions (w/ stand) | 48.4 x 30.0 x 8.7 inches | 57.2 x 35.6 x 12.3 inches |
| Audio | ||
| Output (watts) | 16 | 24 |
| Speakers | 2.0ch | 2.0ch |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 14 | 8 |
| Display | ||
| HDR | Dolby Vision, HDR10+, HDR10, HLG | Dolby Vision, HDR10+, HDR10, HLG |
| Size | 55" | 65" |
| Type | Direct LED (VA LCD) | QLED (VA LCD) |
| Resolution | 3840 x 2160 (4K) | 3840 x 2160 (4K) |
| Refresh rate | 60Hz | 120Hz |
| Brightness (nits) | 350 | 800 |
| Smart TV | ||
| Os | VIDAA U6 | Google TV |
| Voice assistant | Alexa | Google Assistant |
| Connectivity | ||
| Wi-Fi | Wi-Fi 5 | Wi-Fi 6 |
| Ethernet | ||
| Bluetooth | 5.0 | 5.0 |
| USB ports | 2 | 1 |
| HDMI ports | 3 | 4 |
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This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
Explore more in tvs, see all Hisense products or all TCL products. View full details for the Hisense A6K 55" (UHD LED) or the TCL 5-Series S555 65" (QLED).