hello guys, I need your help, I'm not a modder or a pro in headphones, and my HD 595 is having troubles : there isn't any bass in the right ear... and my ear is correct... I can hear the treble but no bass, while the left bass seems stronger than before... (it worked perfectly last time I...

hello Head-fi community, I need your advices. I was wondering if it would be a good choice to buy HD-595 for my portable player (ihp 140). according that they have 50 ohms impedance, would it be still ok without an amp ? (of course I know it would sound better with an amp but I may buy it...