no question this product be full on , 5 star material . I receive a pair of these phone in 1991 -lrb- maybe 1990 , not sure -rrb- , as a birthday present from my aunt and uncle . since receive they , I have take they with I all over the world . I have sleep with they on my head on 15 hour flight , I have sleep with they in my bed , they have be abused and trounce in all kind of luggage . not only do these thing sound incredible , they obviously hold up very well consider the abuse I have heap upon mine and they be still work and sound perfectly after these eighteen -lrb- 18 -rrb- year . I be in awe of they ... awesomeness . I have replace the ear pad once , with these Beyer Dynamic velour pad -lrb- highly recommend btw -rrb- : -lrb- ... -rrb- I be 36 year old , and wonder if I will be willing these thing to one of my child ?! : -rrb-