LG 86NANO81A6A 86" VS TCL 75C6KS 75"

Both the LG 86NANO81A6A and the TCL 75C6KS deliver 4K UHD resolution at 3840 x 2160 px, with 10-bit color depth and 1.07 billion displayable colors. They share identical HDR format support — HDR10, HDR10+, Dolby Vision, and HLG — meaning neither has an edge in content compatibility. Anti-reflection coating and an ambient light sensor are also present on both, as are the maximum 178° horizontal and vertical viewing angles, so neither TV will disadvantage off-axis viewers.

Where the panels diverge meaningfully is in technology and motion handling. The TCL uses a QLED Mini-LED panel — a significant step up from the LG's standard LED-backlit LCD (NanoCell). Mini-LED backlighting enables far more precise local dimming zones, translating to deeper blacks, brighter highlights, and better contrast in HDR content. More critically, the TCL's 120Hz refresh rate versus the LG's 60Hz is a major real-world differentiator: fast motion, sports, and gaming all benefit substantially from the higher panel refresh rate, which also enables Variable Refresh Rate and smoother frame interpolation. Despite being the smaller set, the TCL's 59 ppi pixel density also edges out the LG's 51 ppi, meaning images are marginally sharper at equivalent viewing distances.

The LG's 86″ screen size is its strongest counter-argument — for large living rooms where immersive scale matters more than panel precision, the extra 11.5 inches of diagonal is tangible. But on pure display quality metrics, the TCL 75C6KS holds a clear technical edge: its superior panel technology, doubled refresh rate, and higher pixel density make it the more capable display for the majority of viewing scenarios.

The connectivity foundations of both TVs are largely identical: HDMI 2.1, dual USB ports, an RJ45 ethernet port, Wi-Fi 5, Miracast, a 3.5mm audio jack, and a matching set of DVB tuner standards. For most users, this common ground covers all the essentials comfortably, and the shared Wi-Fi 5 (802.11ac) support means both will handle 4K streaming without issue on a capable home network.

Two specs separate them, and both favor the TCL. First, it offers 4 HDMI ports versus the LG's 3 — a practically meaningful difference for users running a full entertainment setup (gaming console, soundbar, streaming device, Blu-ray player) who would otherwise need a switch. Second, the TCL's Bluetooth 5.4 is a notable generational step ahead of the LG's Bluetooth 5.1. The newer version brings improved connection stability, lower latency, and better handling of multiple simultaneous Bluetooth devices — relevant for wireless headphones, game controllers, or audio accessories.

Neither TV offers an external memory slot, and both lack legacy connectors like VGA or DVI, which is appropriate for modern sets. Overall, the TCL 75C6KS holds a modest but real connectivity edge — the extra HDMI port and newer Bluetooth standard give it more practical flexibility without any trade-offs elsewhere in this category.

In terms of audio format support, these two TVs are perfectly matched. Both deliver 2 x 10W stereo output with Dolby Atmos, Dolby Audio, Dolby Digital Plus, and Digital Out, alongside both HDMI ARC and eARC — the latter being the more capable standard that supports lossless audio passthrough to a compatible soundbar or AV receiver. For users routing audio externally, eARC on both sets means no compromise there.

The single differentiator in this category is the TCL's inclusion of a built-in subwoofer, which the LG lacks. A dedicated subwoofer handles low-frequency reproduction that stereo drivers alone struggle with, meaning the TCL should deliver more perceptible bass depth straight out of the box — an advantage particularly noticeable during action sequences, music, and cinematic content. At the same total output wattage of 20W, the TCL is simply distributing that power more effectively across the frequency range.

That said, neither TV is designed to replace a dedicated sound system, and the 20W ceiling limits both regardless of speaker configuration. Users planning to connect an external soundbar or AV receiver will largely neutralize this difference. For those relying solely on the TV's built-in audio, however, the TCL 75C6KS holds a clear edge thanks to its subwoofer — the only meaningful distinction in this otherwise identical category.

Screen size alone explains much of the physical disparity here, but the numbers are still striking. The LG weighs in at 48.9 kg compared to the TCL's 23.5 kg — more than double — and its footprint is substantially larger at 1927 mm wide versus 1670 mm. For installation, this is a critical practical consideration: the LG will almost certainly require two people and careful wall reinforcement if mounted, while the TCL's relative lightness makes handling and positioning significantly more manageable. Both support VESA mounting, so neither is restricted to stand use.

Thickness is the one dimension where the gap closes considerably — 59.9 mm for the LG versus 56.7 mm for the TCL — a difference that is negligible in real-world placement. The overall volume difference (roughly 127,400 cm³ vs 90,900 cm³) simply reflects the screen size gap and carries no independent design implication.

On operating temperature tolerance, the LG holds a slight edge: it functions between 0–40 °C versus the TCL's 5–35 °C range. This is a minor but real distinction for installations in garages, sunrooms, or poorly climate-controlled spaces where temperatures could drift toward either extreme. Overall, the TCL's dramatically lower weight makes it the more practical set to install and reposition, while the LG's size naturally dominates any room it occupies — a trade-off each buyer must weigh against their space and setup requirements.

This is a rare case of a complete feature draw. Across every single specification in this group, the LG 86NANO81A6A and the TCL 75C6KS are identical — from AirPlay and Google Assistant compatibility to USB recording, smartphone remote support, voice commands, and a matching 0.5W standby power consumption. Neither supports Apple HomeKit or Siri, and neither ships with a rechargeable remote.

The shared feature set is genuinely well-rounded for modern smart TV use. AirPlay allows seamless content mirroring from Apple devices without cables, Google Assistant enables hands-free control and smart home integration, and USB recording lets users capture broadcast content directly to an external drive — a feature increasingly absent on budget-tier sets. The identical standby draw means neither will meaningfully impact energy bills when idle.

With no differentiating data point to separate them, this category is a definitive tie. Buyers prioritizing smart features and ecosystem compatibility will find both TVs equally capable — the decision here comes down entirely to the other specification groups.