From what I gathered, amps make the sound louder without making the sound worse and might add bass or treble if need be. But if I like to listen to my current headphones at volume <50% most of the time and have a built in EQ with my onboard sound card to reduce or increase specific frequencies if need be, will I really benefit from an amp?
Audiophile level: Can tell a difference between mono and stereo and almost all the time between 64 vs 128 kb. When it comes to 126 vs 320 there's a small chance that I might be able to detect that one small sound for 1ms sounded a bit different maybe if I concentrate like my life depended on it. (maybe my song selection wasn't good but I used mp3ornot .com to test that)
I do enjoy my koss even if they are a little uncomfortable and many people say that a small amp such as Fiio E5 (which is the max I am willing to pay for an amp) can make it sounds loads better. So if I would most definitely benefit from an amp, what's a good choice? (cMoy BB and A2V2 are way out of budget so no point in recommending those [Canadian prices please]). Thanks.