Las compre para mi mujer, ya ha usado varias de esta marca par el verano como zapatillas para estar por casa, esta contenta con ellas como siempre I use these to fall asleep and they are definitely better than earbuds in terms of comfort. Very strange! Then order the JBLs without ANC. Some reviews say they run small, I could see them slightly small, but I like the fit. Upon inspection I see why she says that they are very durable light weight silky smooth soft fluffy typ . I would by this again knowing what I know now, and be prepared to modify it as needed. The illustration shows that the first fitting that connects to the dust collector is a 90 elbow . Snug fit without cutting off circulation. all of the videos include the super amp.