I ended up with around $500 of Amazon gift card balance after last Christmas and my birthday and I thought this was a good time to upgrade my audio experience. I have the following right now: a three year old Sennheiser HD 280 Pro closed headphones, a year old Klipsch Image S4 in-ear buds, and as main sources I have a new gaming PC with onboard audio (alc898) and an HTC One as my main portable music device. I also watch mobies on my PC so that's also important to me
I'm looking to upgrade my headphones (preferably open such as the Sennheiser HD 598), get a portable amp if needed/recommended (maybe a fiio e11) and an upgrade to my onboard audio as an external DAC or a sound card. I would prefer a sound card so I can use my front panel jack but if the external DAC is much better I could live with it
Now I don't have to spend the whole $500 so I'm open to saving some money on a good deal even if it means sacrificing a little bit of quality. Also, if possible, I'm looking for some closed headphones to use on the go, on planes, without much sound leak. Basically an upgrade to the Image S4/HD 280 Pro.