Well, spent all yesterday evening working on this thing. Removed the motherboard and soldered in the "stealing points" after the R-C filter instead of directly out of the DAC. However, I noticed a much obvious thing and it's that the motherboard wasn't grounded. Duh! How did this happen? Well Technics grounds the motherboard only at the RCA jacks,and those I had completely removed in order to install my new ones. The circuit board doesn't have any other grounding points. The screw holes are not grounded. So, I went ahead and added a ground cable at the spot where the RCA output ground was and attached that to my star grounds. At this point it was almost midnight so I didn't test anything. So I'll fire it up again later today or tomorrow. Hopefully the noise will be gone!