yes i have an amp.can u please tell me the difference between sound of those headphones

closed or open it doesn't matter to me.. ONLY SOUND QUALITY MATTERS I am going to use headphones in my pc

Guys please help me select a headphone between sennheiser hd 380 pro -- sennheiser hd 598 and sony mdr-xb920---Sony MDR-1R/B my main purpose for buying is listening music   which one of above have more bass & louder sound PLEASE GUYS HELP ME I AM TRYING TO FIND AN ANSWER FOR LAST 2 WEEKS. I...