I only bought this because my 3.5mm input is protected by my case, so I needed a smaller input to get in there, that's why I bought this. It works perfectly fine, but I occasionally notice some feedback/hissing noise, not always. I try to wiggle it around a bit or adjust the connection, to no avail. So I will knock off one star for that. I'll remove the case to my phone and use a regular RCA cord without this adapter and the hiss is gone, so it definitely is this adapter.