iFi Amp / Dac Sale: Pro iCAN $1299, Pro iESL $1099, S50 Tube Amplifier $999 + free shipping By admin | September 1, 2017 4:07 pm EST 0 Comment free shipping iFi Retro S50 Integrated All-in-One Vacuum Tube Amplifier $999 iFi Pro Series iESL Energiser for Electrostatic Headphones $1099 iFi Pro iCAN Headphone Amplifier $1299