I worry about the input plug on my expensive headphones for the Iphone being straight rather than L shaped. I couldn't find an adapter that was L shaped so I thought I'd give this a go.
The first one's sound was awful, and only put out sound to the left side. The seller did send a second immediately after I contacted them about the issue and didn't ask for me to return the 1st.
When the 2nd arrived, the plug wouldn't fit into the Iphone's jack.
I contacted the seller again, and he gave me a refund.
I'd stay away from this product.