these days i read from a local forum (i live in hong kong) telling me to replace the transformer come along with the 0404USB because it is an "electronic adapter" (i am not a technical guy so i don't know what is bad about an electronic adapter). What i should buy, they said, is a "real adapter", and a real one should be a more heavy one (you may notice that the default adapter is light-weighted). Thanks for their help i even got a model number of a particular brand, i brought it (HK$69), called Super S-1200R Regulated AC-DC adapter, connected to the soundcard, wow, the sound is better! more lively, human voice a bit more sweet, sound image more concrete, dynamics a bit better, treble range more natural, bass range's just about the same, i think it's about 20% increase in sound quality... anyone could tell me why it is better?