Not 100% a DIY question, but I know there are some amazingly knowledgeable people here who might be able to explain.
Basically, I hooked up a new, regulated power supply (Goldsource 13.8V 5A from Amazon) to my Sonic Impact Super T-amp (TA2024 based) and I heard some rice krispies (snap, crackle, and pop) from my Nuforce HDP and then saw magic smoke and smelled the sweet aroma of cooked electronics. My HDP is my audio hub and was hooked up to the T-amp via the HDP's analog out (RCA). Inputs are through USB, optical, and analog in (RCA) and all were hooked up. The HDP was on, but the amp was not. I think that the power supply was on when I plugged into the T-amp, and the power plug wasn't fully seated before this all happened. The RCA cables I used were some DIY 4 wire round braid cables that had never given me a problem before. Prior to the regulated power supply, I was using a normal wall wart with no issue with any of the equipment.
I am quite relieved that so far, at least through the headphone out, the HDP is still working from all three sources. However, I am scared to hook my amp back up to my HDP at this point. I don't know how my HDP is still alive after smoking, but I'd l like to keep it that way. I am back to a wall wart for my T-amp. And for more data, I have another DIY T-amp (TA2020 based) that I tried first and had zero issue with, although I had a different source hooked up to it. If it matters, the T-amp is in an aluminum case, while my DIY is in a plastic box.
I'd appreciate any thoughts on what happened. I only know enough about all this to get myself in trouble. Thanks!