It restores enough oompf to the bass that my music sounds great again. Non ho speciali amplificatori per cuffie, ma solo modesti mezzi che dirò in seguito. ?? I love the design but the top ear part gets loose and continuously falls off ?? In addition, this was MUCH more noticeable when actually playing with the racquet and hitting the ball. After buying and trying it, I bought another one! One was the wrong part, the other was damaged again. The item I received was labelled as made in China and very uncomfortable compared to other flip flops Ive worn that cost $20 less. Do NOT trust your expensive headphones in this flimsy case. These are not hose couplings and should be labeled pipe couplings.