I bought a new HyperX Cloud headset that I wanted to use it instead of my wired Xbox chat mic. I also have a newer controller with the 3.5mm jack that I was able to plug straight into. I got tired of having to open menus up to adjust the volume, so I went to buy the stereo headset adapter. Through a little research I found that I would lose the mic monitoring (look it up if you don't know what it is - I had to) feature. Apparently this feature is disabled if you use the stereo headset adapter, but not if you just plug the headphone jack straight into the controller - weird. My only options that retained mic monitoring were the Turtle Beach stereo adapter, the chat pad, or the HyperX Cloud Pro which had an inline volume control. The chat pad was the cheapest option, so I went with it and I am glad I did. I didn't think I would use the keypad much, but I am finding myself typing a lot more messages to my friends or recent players.
I originally bought this as an open box for $5 off MSRP. When I tried to use it, it wouldn't fit into the controller - either of my controllers actually. The pins wouldn't line up, so it was likely a manufacturing defect. So I returned it, and got another one that fit perfectly.