These headphones have saved my sanity! I have no idea what they sound like from the inside, but from the outside they are Heaven sent. He's teaching himself jazz piano and he's obsessed, which means there is a discordant cacophony going on in my living room for several hours a day! Now... he loves that improv thing and the notes are all over the place, so headphones for him are a must if he is going to survive his learning curve. I can't promise that I won't throw that electric piano out the front door after hours and days of non-stop chaos.