The Hosa YPP118 is a 1/4" stereo splitter cable. If you're looking for a good price on a splitter for headphones, this is it. The male end is a standard quarter inch stereo plug. There is about three inches of wire separating the male from the two female ends. Those are standard quarter inch stereo, too. All you have to do is plug the male end into your receiver, then plug two headphones into the female ends.
I noticed a slight volume reduction when splitting the signal. There was no added noise. The quality seems high. My headphone plugs fit in snugly, but not too tightly. The wire separating the male and female ends is flexible and covered by a good amount of pliable plastic. It doesn't feel like it's going to wear through or short out with common use.
The only thing that seems low grade on them is the finish. There's some rough edges on the plastic, looks like they are from the mold.