Solved! I search amp for headphones

[dSparks94]

Hi all!
Recently, my old friend (audiophile) decided to give me headphones, Senheiser HD 660S thus puzzled me, they need an amplifier, but I don't understand anything about this, this review some site seems to be what I need, but I somehow doubt that such small devices are amplifiers
Tell me what will really fit these headphones? Thank!

 

[rgd1101]

how did you find that site. google on headphones amp don't have that at all