This is my at home setup that I have connected to my PC. Tube amp with my DAC next to it. Tubes have been rolled to custom JJ 6V6S's and a the little one in the middle is a RCA Conn clear top 12AU7A that was made sometime in the 1960's it is known for one of the most desirable tubes. I then plug my Sennheiser HD650's into those and the sound is amazing.