(Image credit: Tom's Hardware) With the cost of building a PC continuing to go up, you start to look elsewhere for ways to upgrade your setup. One of the best ways you can do that is with a high-quality pair of the best PC speakers , and some of our favorite options are on sale with deep discounts for Prime Day. Regardless of whether you want to finally stop using your monitor's junky built-in speakers or an open-space alternative to headphones, a solid pair of speakers can elevate your setup, for games, movies, and of course, music. We have a handful of options here that are on sale for Prime Day, ranging from budget 2.0 setups to 7.1 surround sound systems. Check out all the PC speaker deals on Amazon Starting on the budget end, the Creative Pebble V2 speakers are just $26 for Prime Day. We've looked at the higher-powered Pebble Pro set , which also features some modern trimmings like Bluetooth at a much higher price of $60. The Pebble V2 speakers feature an older driver, but they're the same size.…