Sure, here's a two-paragraph answer to the question, Do I really need a 4K TV to enjoy a 4K Blu-ray player?
You don't necessarily need a 4K TV to enjoy a 4K Blu-ray player, but it's highly recommended to get the most out of your 4K Blu-ray discs. 4K Blu-rays are encoded using the High Efficiency Video Coding (HEVC) standard, also known as H265, which allows for 10-bit color depth and support for the full spectrum of the Rec.2020 color space. This means that 4K Blu-ray discs can offer a much more detailed and colorful picture than standard Blu-ray discs.
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However, to take full advantage of the improved picture quality offered by 4K Blu-ray discs, you'll need a 4K TV that supports HDR (High Dynamic Range) and a wide color gamut. If you have a 4K TV that doesn't support HDR, you'll still be able to play 4K Blu-ray discs, but you won't get the full benefit of the improved picture quality. Additionally, if you have a 4K TV that doesn't support the Rec.2020 color space, you won't be able to see the full range of colors that 4K Blu-ray discs can offer. So, while you don't necessarily need a 4K TV to enjoy a 4K Blu-ray player, having one will greatly enhance your viewing experience.