Pretty disappointed in the quality of the pair I received. Love the dark brown look. Je dirais que pour le prix, cest pas trop mal, mais je déconseille pour le studio. Super love em, comfy af ! There is a blue and red LED that flash in multiple ways to indicate the status, but I could not determine their meaning. I purchased this product as a headphone amp with additional mic controls. I recently bought a bike and one of the primary components I like on my bike are kickstands. Ill update in a couple months on how they hold up if I rememeber lol. The boots don?t hurt the arch of my feet, that?s a good thing. Love this sure