Navigating the companion software also takes some patience. Though you can easily customize EQ settings, fine-tune options for both Dolby (volume of individual speakers) and DTS Headphone:X (choosing one of two options for sound image positioning), tweak RGB lighting effects, and customize G-key commands, you can’t see changes made by pressing on programmed G-keys if you have the window open but are active elsewhere. You have to switch back to Logitech's software, choose another tab, and then go back to the original tab to see your updates. This can make determining what EQ setting you’ve cycled to or if surround is on difficult unless you mess around with the window.
And in what was hopefully a fluke, the software (version 8.75.30) didn’t play nice at all on the first machine, Windows 7, used for testing. Off the bat, antivirus program Ad-Aware detected part of the installation files as a Trojan and put it into quarantine; even after updates to the program and multiple attempts to reinstall the companion software properly, the G633 never sounded quite the same as on a second machine that was used for the review. The G-keys also didn't function quite right; they only issued commands about 50% of the time when pressed.
With a $150 price tag, the G633's flaws make it a hard sell, even to those who would use it exclusively on PC. However, even though you can do better—the HyperX Cloud is far cheaper and remains our top pick—those seeking a audio experience that doesn't pander to the Beats by Dre crowd may still find it worthwhile to give these a listen. My favorite blues music has never before sounded so appropriately crisp on gaming headphones.