Solved! I search amp for headphones

Feb 4, 2021
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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!
 
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