Welcome to one of the more contentious issues in home theater. 4K is a picture standard that is supposed to provide an absolutely stellar viewing experience. While we don’t really deal with visuals here at TMS, it’s worth noting that almost all receivers advertise themselves with their 4K capability, and so we think it’s worth mentioning, even if it’s not something we’re going to spend a great deal of time on.
Essentially, 4K offers a picture resolution of 4,000 pixels, which is absolutely huge. The problem is, while there are plenty of TVs and receivers that take advantage of it, there is not always a lot of content that does the same. 4K movies and series are actually quite rare! It’s likely to become more common over the next few years, but for now, consider this an extra little bit of information to have, and possibly something that you can use to future proof your system. Don’t let it affect the one you buy.