Hi, i am having issues with interference with my amplifier and my pc, the amp is connected by a normal 3.5 jack and then from the amp to my headphones, the amp is old probably made in the 90's or 80's but it make gaming and music sound incredible apart from the interference noises, was just wondering if anyone had and solutions or if im going to have to say goodbye to my trusty amp. Thank you
Start with a high quality cable between the PC and amp. Verify the polarity of the plug on the amp. It may be old enough to not have a polarized plug. Try a separate ground wire between the PC and the amp.