Is su-1 using same board as f1? Because I see su-1 has AES output which f1 doesn't have one. If I buy f1 which is cheaper but want to add AES output, how should I do it? From the img attached, it seems f1 is pretty straight forward to use, just connect pc usb to the usb input, and coaxial output from the board to dac, that is it, am I right? I am drooling on this f1 because it is very hard to wrap around the idea that this simple board setup can beat 30k analog rig, which sounds as good as getting "Nobel price" for audio.
Even my digital rig which consists of clean powered Intel NUC as renderer with fiber optic connection, still loses out little bit to a 20k Synthesis Roma cd player. But here this f1 can make you forgetting about 30k analog rig. That is unbelievable.