If there is no hissing and popping then it's not interference. I think take them back and test another one. perhaps take your laptop into store and see if their other one has the same issue, it could be a batch problem or a random one with that headphone. If you decide to go the refund rout, I did just post about a great buy in the headphone question thread. These would be a significant upgrade to what you have currently and I'd gladly recommend them. http://forum.notebookreview.com/threads/headphone-advice.805176/ DAC + AMP.... There is this cool little AMP from JDS labs from $60USD https://www.jdslabs.com/products/1/cmoybb-v2-03-headphone-amplifier/ There is the Fiio E10K for around $100 https://www.amazon.com/FiiO-E10K-Headphone-Amplifier-Black/dp/B00LP3AMC2 You can upgrade slowly and do a schiit stack, buy the amp first, then the DAC down the line. Lots of people rave about them. http://www.schiit.com/home I spent a little more and got the OBJECTIVE2+ODAC REV B as it's an all in one unit. Also if you buy from JDS you can get free laser etch. (Wait for this to go on special if you don't want to spend the money, but it's worth it) These start around $280USD but second hand options and other sellers may have cheaper. https://www.jdslabs.com/products/48/objective2-odac-combo-revb/ There are probably more out there, but these I will recommend over anything else as I've tried them all. I can't speak for any of the others. Hope that helps.