Btw, do u hv any recommendation for portable amp? Saw pico amp, but dont know is it good anot

Currently I using a tdk sti710, so tot of upgrading to full size closed back. As there is so many brand dun noe which one to try. Also dun noe is there a need for a protable amp

Hi,   I am always looking into getting better sound quality. But i am a starter so not sure how to i go ahead to choose a headphone, how to look at the specification when choosing.   As i do not want to pay a lot of money to buy the most expensive headphone(sometime expensive does not...