Twisted Pear Audio Buffalo III SE, Burson Soloist, Musical Fidelity V-DAC w/Pyramid Power Supply, Teac UD-HO1 DAC, Teradac TDA1543 NOS DAC,  Sunrise Project II various tubes, Audeze LCD-3, Fostex T50RP DBV#3 Mod., AKG 7KXX various other headphones and IEMs