The TCL QM8L proves it's worth the upgrade in our lab testing

The TCL QM8L, released in April, stands out among the 2024 model's flagship TVs due to a blend of software and physical enhancements. While the differences between the 2024 and 2026 versions may not seem significant at first glance, they noticeably improve picture quality, sound, and performance. The QM8L (2026) boasts a Super Quantum Dot (SQD) Mini LED panel, which delivers remarkable color accuracy and contrast while maintaining brightness and preventing burn-in.

Unlike traditional LED panels that use white LEDs, the Quantum Dot layer incorporates a highly engineered color filter set in front of a refined lighting panel that uses blue LEDs. This configuration boosts the number of colors the display can reproduce, allowing the QM8L (2026) to recreate up to 100% of the BT.2020 color spectrum. Our Calman testing has shown a remarkable 99.9% match to this standard, compared to the QM8K (2024)'s more modest 90%.

The SQD Mini LED panel's smaller bulbs enable the creation of tens of thousands of dimming zones, mimicking the pixel-level contrast of high-end OLED displays. Consequently, the QM8L (2026) can achieve a maximum brightness of 6,000 nits, a 20% increase over the QM8K (2024). Although this high brightness is beneficial for rooms with substantial sunlight or harsh overhead lighting, it may feel excessive in typical living room settings.

Additionally, the QM8L (2026) features speakers designed by Bang & Olufsen, renowned for its premium audio quality. The built-in speakers support 3D audio via Dolby Atmos, delivering an immersive sound experience. Alternatively, users can connect Bang & Olufsen-designed wireless subwoofers and satellite speakers for a 3.1.2CH audio setup.

Despite being a few years old, the TCL QM8K still competes effectively with newer models and major brands like Samsung and LG. However, it exhibits signs of aging, particularly in color accuracy, brightness, and contrast.