What is the advantange of acss over rca?
Yeah once i get and am convinced myself
From my testing with the C-2 Class A amp (thanks for the loaner, @Soundsgoodtome!), the ACSS connection opened up the soundstage and clarity a bit almost like going balanced. I tested it against my Theta Basic II, which when run SE sounds essentially identical to the DAC-19. Plugged the DAC-19 in via ACSS and the Theta in via balanced. The Theta was slightly more open but the DAC-19 was probably 70% of the way there.
The improvement was nice. If you do end up with an AGD amp that supports it, I highly recommend going ACSS. It really gets that SE DAC going most of the way towards balanced and that's a great thing.