An interesting findings that the culprit of the hiss... it's the Novaris Surge Filter. I managed to open this surge filter, they are organized in 5-slot, first slot is the SPD (surge protection device), 2-5 slots are twin sockets, I slide out these slots and noticed few 3-pin socket outlets wiring terminals were loose. Thus, I fastened all of them.
Then, I reinstated all the slots in original manner. After plugged in all the music sources, Ares 2, DMP-A6 and E280 and tested on both standby and turn-on mode, there's no more hissing noise from tweeter, dead quiet. I am so delightful able to find the root cause finally.