I have focusrite 2i2, which has only one headphone out. But, when my friend comes, either I have play on studio monitors or switch headphones. We kinda had issues or missed details during this process.
Since I got the Y cable, the problem is solved. I thought it would be of cheap quality, but it is better than what it looks. It works! What do you expect for the price point.
I have it always handy, we have to just plug and play two headphone inputs and this works. Thanks thomann :)