Below are excerpts from the review: It is worth considering that if your player or amplifier has a paired 3.5 mm output, it is better to connect headphones to it. And if you don’t have this jack, this adapter is indispensable. A pleasant bonus of DJ30A is that it allows us to get from a straight jack to an L-shaped one, which is very convenient in some cases. From: Audio-ph Click here to view more