iFi S50 Tube Amplifier & Dac $1050 or w/ Speakers $1350 + free shipping By admin | July 18, 2017 9:50 pm EST 0 Comment Beautiful little amp. Lots of power iFi S50 Tube Amplifier & Dac $1050 iFi S50 Tube Amplifier & Dac + Speakers $1350 + free shippingreview