I'm gonna get my spouse headphones for Xmas so we can both have a set for late night HT listening while the child is sleeping. I don't want to do the wireless thing; I'm going to run a Y-adapter from my receiver. BUT, I know she won't want it as loud as I will. Can someone direct me to an In-line volume attenuator I can add to her headphone cable? My searches are not turning up anything. Thanks!