No idea, I gave it away for free to a solder-handy guy who was unemployed and needed something to drive a 5.1 set he was gifted from someone else. I did try a h

No idea, I gave it away for free to a solder-handy guy who was unemployed and needed something to drive a 5.1 set he was gifted from someone else. I did try a heatsink, but that didn't help noticeably.