After I bought HDVD 800, it felt like I should change my control headphone. Sure, I was in love with AKG K812 for a long time. But, if using HDVD 800 as a main headphone amplifier and DAC, HD800 made me feel right. So I bought CH800S cables, too. (Oh, that was 'uselessly' expensive.)   HD800 sounds really nothing with balanced connection. I mean, Nothing is Nothing. In my personal and subjective view, Highs too dry, Lows too simple. But why? It makes sense all the time. When I'm reviewing headphones, HD800 acts as a control with high satisfaction...