TCL 55C6K Pro vs TCL 55A400U Comparison
TCL 55C6K Pro vs TCL 55A400U compares two TVs with different strengths for picture quality, motion, and everyday use. TCL 55C6K Pro is specified with 54.6 in / HVA / 4K / Mini LED, while TCL 55A400U uses 54.6 in / HVA / 4K / Mini LED. Both are listed at 48 Hz – 144 Hz refresh. Both list 93 % DCI-P3 coverage. The better choice depends on which of those differences matters most in your setup.
TCL 55C6K Pro and TCL 55A400U are closely matched in the supplied core specifications, so there is no strong all-purpose winner on paper. The deciding factors are the smaller differences in ports, stand flexibility, smart features, or current price. TCL 55C6K Pro uses 4K, while TCL 55A400U uses 4K. Refresh is listed at 48 Hz - 144 Hz versus 48 Hz - 144 Hz. Choose the model whose strengths match your actual workload or viewing habits.
TCL 55C6K Pro uses 54.6 in / HVA / 4K / Mini LED, while TCL 55A400U uses 54.6 in / HVA / 4K / Mini LED. TCL 55A400U lists 2500 cd / m²; the supplied data for TCL 55C6K Pro does not publish an equivalent figure. Both list 93 % DCI-P3 coverage.
TCL 55C6K Pro lists 48 Hz - 144 Hz, while TCL 55A400U lists 48 Hz - 144 Hz.
Both use Google TV. TCL 55C6K Pro lists 2 x 10 W, while TCL 55A400U lists 2.0 CH. HDR support also differs: TCL 55C6K Pro lists HDR10 / HDR10+ / Dolby Vision / Dolby Vision IQ / HLG (Hybrid Log Gamma), while TCL 55A400U lists HDR10 / HDR10+ / HDR10+ Gaming / Dolby Vision / Dolby Vision IQ / HLG (Hybrid Log Gamma).
Because the core specifications are closely matched, current price, warranty, and availability should carry more weight. The supplied data does not include live pricing, so neither model can be called the better value unconditionally.
| Specification | ||
|---|---|---|
| TV Overview | ||
| Rating | 8.2 / 10 | 8.4 / 10 |
| Brand | tcl | tcl |
| Category | TV | TV |
| Television Identity & Market | ||
| Brand | TCL | TCL |
| Series | C6K Pro | A400U |
| Model | 55C6K Pro | 55A400U |
| Model Alias | -- | 55" TCL A400U Premium Wallpaper QD-Mini LED TV |
| Full Product Name | TCL 55C6K Pro | TCL 55A400U |
| Model Year | 2026 | 2026 |
| TV Category | Mid-Premium Tier | Premium Design-Focused Tier |
| Market Position | Mid-Premium QD-Mini LED | Designer Series QD-Mini LED |
| Primary Use | Home Entertainment & Everyday HDR Viewing | Design-Conscious Premium Home Entertainment |
| Region / Variant | Not specified | Not specified |
| Launch Status | 2026 model year | 2026 model year |
| Available Colors | Black | Black |
| Warranty | 1 year limited warranty | 1 year limited warranty |
| Screen Geometry & Format | ||
| Screen Size | 54.6 in | 54.6 in |
| Marketed Screen Size | 54.6 in | 54.6 in |
| Exact Diagonal | 1388 mm / 138.8 cm / 54.6457 in / 4.5538 ft | 1388 mm / 138.8 cm / 54.6457 in / 4.5538 ft |
| Aspect Ratio | 1.778:1 16:9 | 1.778:1 16:9 |
| Active Display Width | 1209.6 mm / 120.96 cm / 47.622 in / 3.9685 ft | 1209.6 mm / 120.96 cm / 47.622 in / 3.9685 ft |
| Active Display Height | 680.4 mm / 68.04 cm / 26.7874 in / 2.2323 ft | 680.4 mm / 68.04 cm / 26.7874 in / 2.2323 ft |
| Screen-to-Body Ratio | 94.4 % | 94.4 % |
| 3D Support | No | No |
| Panel Architecture & Light Control | ||
| Panel Manufacturer | CSOT | CSOT |
| Panel Type? | HVA | HVA |
| Panel Technology | VA | VA |
| Quantum Dot | Yes | Yes |
| Backlight Type? | Mini LED | Mini LED |
| Panel Bit Depth | 10 bits (8 bits + FRC) | 10 bits |
| FRC | Yes | -- |
| Display Colors | 1073741824 colors30 bits | 1073741824 colors30 bits |
| Surface Treatment & Viewing Layer | ||
| Screen Coating | Anti-glare/Matte | Anti-glare/Matte |
| Resolution, Scaling & Signal | ||
| Native Resolution | 3840 x 2160 pixels Ultra HD (UHD) / 4K / 2160p | 3840 x 2160 pixels Ultra HD (UHD) / 4K / 2160p |
| Pixel Density | 80 ppi | 80 ppi |
| Pixel Pitch | 0.315 mm | 0.315 mm |
| HDCP Support | Yes | Yes |
| Luminance, Blacks & Contrast | ||
| Typical Brightness | -- | 650 cd/m² |
| Peak Brightness | -- | 2500 cd/m² |
| Static Contrast | 6000 : 1 | 6000 : 1 |
| Static Contrast Ratio | 6000 : 1 | 6000 : 1 |
| Dynamic Contrast Ratio | -- | 25000000 : 1 |
| Viewing Angles | 178 ° / 178 ° | 178 ° / 178 ° |
| Horizontal Viewing Angle | 178 ° | 178 ° |
| Vertical Viewing Angle | 178 ° | 178 ° |
| Color Reproduction & Calibration | ||
| DCI-P3 Coverage | 93 % | 93 % |
| Wide Color Gamut | Yes | Yes |
| HDR Formats & Tone Mapping | ||
| HDR Support? | HDR10HDR10+Dolby VisionDolby Vision IQHLG (Hybrid Log Gamma) |
HDR10HDR10+HDR10+ GamingDolby VisionDolby Vision IQHLG (Hybrid Log Gamma) |
| HDR Formats? | HDR10 /HDR10+ /Dolby Vision /Dolby Vision IQ /HLG (Hybrid Log Gamma) |
HDR10 /HDR10+ /HDR10+ Gaming /Dolby Vision /Dolby Vision IQ /HLG (Hybrid Log Gamma) |
| IMAX Enhanced | Yes | Yes |
| Filmmaker Mode | Yes | Yes |
| Motion Processing & Response | ||
| Native Refresh Rate | 48 Hz - 144 Hz | 48 Hz - 144 Hz |
| Maximum Refresh Rate | 48 Hz - 144 Hz | 48 Hz - 144 Hz |
| Motion Processing | AI Motion MEMC (Motion Estimation Motion Compensation) | AI Motion Master Motion Estimation Motion Compensation (MEMC) |
| Motion Estimation | Yes | Yes |
| Console, VRR & Game Tools | ||
| Variable Refresh Rate | Variable Refresh Rate (VRR) | Variable Refresh Rate (VRR) |
| Auto Low Latency Mode | Auto Low Latency Mode (ALLM) | Auto Low Latency Mode (ALLM) |
| High Frame Rate | Yes | Yes |
| AMD FreeSync? | AMD FreeSync Premium Pro | AMD FreeSync Premium Pro |
| Game Bar | Game Master with Game Bar | AI Gaming with Game Bar |
| Picture Intelligence & AI | ||
| AI Upscaling | Yes | Yes |
| Filmmaker Mode | Yes | Yes |
| Ambient Mode | Yes | Yes |
| Broadcast Tuners & Reception | ||
| Built-In TV Tuner | Yes | Yes |
| Tuner Configuration | Analog (NTSC/PAL/SECAM) DVB-T DVB-T2 DVB-C DVB-S DVB-S2 | Analog (NTSC/PAL/SECAM) DVB-T DVB-T2 DVB-C DVB-S DVB-S2 |
| Analog Tuner | NTSC / PAL / SECAM | NTSC / PAL / SECAM |
| Digital Terrestrial Tuner | dvb-t | dvb-t |
| Digital Terrestrial Tuner 2 | dvb-t2 | dvb-t2 |
| Digital Cable Tuner | dvb-c | dvb-c |
| Digital Satellite Tuner | dvb-s | dvb-s |
| Digital Satellite Tuner 2 | dvb-s2 | dvb-s2 |
| Satellite Input | 1× F-type | 1× F-type |
| Antenna RF Input | Yes | Yes |
| Compute, Memory & Storage | ||
| Processor Brand Name | AIPQ Processor | TSR AIPQ Processor |
| System on Chip | -- | Media Tek 9655+ |
| SoC Model | AIPQ Processor | Media Tek 9655+ |
| CPU Architecture | -- | ARM Cortex-A73, 1800 MHz, Cores: 4 |
| CPU Cores | -- | 4 |
| GPU | -- | ARM Mali-G57 MC1 |
| RAM Capacity | -- | 4 GB |
| Smart Platform & System | ||
| Smart TV | Yes | Yes |
| Operating System | Google TV | Google TV |
| Streaming & Entertainment | ||
| Netflix | Yes | -- |
| Prime Video | Yes | -- |
| Disney+ | Yes | -- |
| Apple TV+ | Yes | -- |
| Ambient Mode | -- | Ambient Mode |
| Voice Assistants & Search | ||
| Voice Control | Yes | Yes |
| Google Assistant | Yes | -- |
| HDMI Signal Interface | ||
| Total HDMI Ports | 4 | 4 |
| HDMI 2.1 Ports | 2×HDMI 2.1 |
2×HDMI 2.1 |
| HDMI 2.0 Ports | 2×HDMI 2.0 |
2×HDMI 2.0 |
| HDMI CEC | Yes | Yes |
| Audio Return Channel | Yes | Yes |
| Enhanced Audio Return Channel | Yes | Yes |
| Auto Low Latency Mode | Auto Low Latency Mode (ALLM) | Auto Low Latency Mode (ALLM) |
| High Frame Rate | Yes | Yes |
| Variable Refresh Rate | Variable Refresh Rate (VRR) | Variable Refresh Rate (VRR) |
| HDCP Support | Yes | Yes |
| USB, Audio & Legacy I/O | ||
| Total USB Ports | 1 | 1 |
| USB-A 3.0 Ports | 1×USB 3.0 |
1×USB 3.0 |
| Ethernet Port | 1× RJ45 | 1× RJ45 |
| Optical Audio Output | 1× S/PDIF | 1× S/PDIF |
| Satellite Input | 1× F-type | 1× F-type |
| Antenna Input | 1× RF | 1× RF |
| Common Interface Slot | 1× CI+ | 1× CI+ |
| Wireless, LAN & Casting | ||
| LAN | Yes | Yes |
| Wi-Fi | Wi-Fi 8 | Wi-Fi 8 |
| Wi-Fi Standards | 802.11a | 802.11a |
| Bluetooth | Bluetooth 5.4 | Bluetooth 5.4 |
| Wi-Fi Direct | Yes | Yes |
| DLNA | Yes | Yes |
| Apple AirPlay | Yes | Yes |
| Apple HomeKit | Yes | -- |
| Chromecast | Yes | -- |
| Google Cast | Yes | Yes |
| Miracast | Yes | Yes |
| Multi-View | -- | Yes |
| Speaker Layout & Output | ||
| Built-In Speakers | 2 x 10 W | Yes |
| Speaker Configuration | -- | 2.0 CH |
| Speaker Channels | -- | 2.0 CH |
| Built-In Subwoofer | 1 x 20 W | -- |
| Total Audio Output | -- | 20W |
| Total Speaker Output | -- | 20W |
| Sound Formats & Enhancement | ||
| Dolby Atmos | Yes | Yes |
| Dolby Digital | -- | Yes |
| Dolby Digital Plus | -- | Yes |
| DTS Virtual:X | DTS Virtual:X | -- |
| Camera & Video Calling | ||
| Built-In Camera | No | No |
| Connected Home & IoT | ||
| Apple HomeKit | Yes | -- |
| Panel-Only Size & Mass | ||
| Dimensions Without Stand | 1228 mm x 710 mm x 56 mm (W x H x D) | 1228 mm x 710 mm x 39.9 mm (W x H x D) |
| Width Without Stand | 1228 mm | 1228 mm |
| Height Without Stand | 710 mm | 710 mm |
| Depth Without Stand | 56 mm | 39.9 mm |
| Weight Without Stand | 12.8 kg | 13.4 kg |
| Assembled TV Size & Mass | ||
| Dimensions With Stand | 1228 mm x 760 mm x 270 mm (W x H x D) | 1228 mm x 762 mm x 295 mm (W x H x D) |
| Width With Stand | 1228 mm | 1228 mm |
| Height With Stand | 760 mm | 762 mm |
| Depth With Stand | 270 mm | 295 mm |
| Weight With Stand | 14 kg | 14.5 kg |
| Shipping Carton Measurements | ||
| Box Dimensions | 1400 mm x 875 mm x 150 mm (W x H x D) | 1360 mm x 875 mm x 122 mm (W x H x D) |
| Box Width | 1400 mm | 1360 mm |
| Box Height | 875 mm | 875 mm |
| Box Depth | 150 mm | 122 mm |
| Box Weight | 18 kg / 39.68 lbs | 19.3 kg / 42.55 lbs |
| Exterior Styling & Stand Footprint | ||
| Stand Width | 295 mm / 29.5 cm / 11.6142 in / 0.9678 ft | 276 mm / 27.6 cm / 10.8661 in / 0.9055 ft |
| Chassis Color | Black | Black |
| Wall Mounting & Installation | ||
| VESA Mount | 300 x 300 mm | 400 x 400 mm |
| VESA Interface | 300 x 300 mm | 400 x 400 mm |
| VESA Size | 300 x 300 mm | 400 x 400 mm |
| Removable Stand | Yes | Yes |
| Height Adjustment | Yes Landscape/portrait pivot: No Left/right swivel: No Forward/backward tilt: No | No Landscape/portrait pivot: No Left/right swivel: No Forward/backward tilt: No |
| Swivel Adjustment | No Forward/backward tilt: No | No Forward/backward tilt: No |
| Tilt Adjustment | No | No |
| Pivot Adjustment | No Left/right swivel: No Forward/backward tilt: No | No Left/right swivel: No Forward/backward tilt: No |
| Portrait Mode | No | No |
| Electrical Load & Efficiency | ||
| Power Input | 100 V - 120 V / 220 V - 240 V | 220 V - 240 V |
| AC Frequency | 50 Hz - 60 Hz | 50 Hz - 60 Hz |
| Typical Power Consumption | 64 W | -- |
| Maximum Power Consumption | 150 W | -- |
| Standby Consumption | 0.5 W | 0.5 W |
| Energy Efficiency Class | E | -- |
| Environmental Operating Limits | ||
| Operating Temperature | 5 °C - 35 °C / 41 °F - 95 °F | 5 °C - 35 °C / 41 °F - 95 °F |
| Operating Humidity | 20 % - 80 % | 20 % - 80 % |
| Storage Temperature | -15 °C - 45 °C / 5 °F - 113 °F | -15 °C - 45 °C / 5 °F - 113 °F |
| Storage Humidity | 10 % - 90 % | 10 % - 90 % |
| Picture Feature Inventory | ||
| Filmmaker Mode | Yes | Yes |
| IMAX Enhanced | Yes | Yes |
| Gaming Validation & Compatibility | ||
| AMD FreeSync Certification? | Yes | Yes |
| Game Bar | Game Master with Game Bar | AI Gaming with Game Bar |
| ALLM | Auto Low Latency Mode (ALLM) | Auto Low Latency Mode (ALLM) |
| Regulatory & Industry Approvals | ||
| CE | Yes | Yes |
| IMAX Enhanced | Yes | Yes |
| CI+ Certification | Yes (CI+ 1.4) | Yes (CI+ 1.4) |
| In-the-Box Components | ||
| Remote Control | Backlit voice remote control | Voice remote control |
| Remote Voice Control | Yes | Yes |
| Screen Size | 54.6 in | 54.6 in |
Methodology: The verdict and comparison notes on this page are written by an editor after reviewing the full specification table below; they are not generated by an automated scoring formula. Conclusions are based on manufacturer-listed specifications only - no benchmark testing, measured brightness or hands-on use is claimed unless stated. Missing values are left blank rather than estimated. Report an error.
Updated: September 2026
Frequently Asked Questions
They are closely matched in the supplied core specifications, so the better choice depends on smaller feature differences and price.
Neither has a decisive gaming lead from refresh rate alone in the supplied data. TCL 55C6K Pro lists 48 Hz - 144 Hz and TCL 55A400U lists 48 Hz - 144 Hz.
TCL 55C6K Pro uses HVA at 4K, while TCL 55A400U uses HVA at 4K. TCL 55A400U lists 2500 cd / m²; the supplied data for TCL 55C6K Pro does not publish an equivalent figure.
Both use Google TV. TCL 55C6K Pro lists 2 x 10 W, while TCL 55A400U lists 2.0 CH. HDR support also differs: TCL 55C6K Pro lists HDR10 / HDR10+ / Dolby Vision / Dolby Vision IQ / HLG (Hybrid Log Gamma), while TCL 55A400U lists HDR10 / HDR10+ / HDR10+ Gaming / Dolby Vision / Dolby Vision IQ / HLG (Hybrid Log Gamma).
Choose TCL 55C6K Pro for streaming and smart-TV use with Google TV. Choose TCL 55A400U for streaming and smart-TV use with Google TV. If both suit you, compare current price and warranty because live pricing is not part of the supplied data.