Unusable product. These are very good for day to day listening literally not earphone beats the bass on these not even the super expensive ones! Anyways, my device finally arrived today and I plugged it in the Audi Music Interface compartment located in the glove box. I decided to only put them on when needed (a few times a year) so I bought a ball end torx wrench which makes installation much easier You can leave these on all year round as there is no issue with quality, I just dont like the look of them on the vehicle. Overall, its fun to bang on this -- perhaps not as much so for other people in the house -- but it has a limited "range of expression. While both sizes fit me (8 and 10), the size 10 is much better for work. I would much prefer a flat black Alternative to crappy sandals that kids struggle with and they love the bright fun colors. The ear cups are large enough to fully enclose the ear, making a tight seal creating a near noise cancelling effect. They make all the difference in sound quality, and when they wear out I will definitelly order again.