ECCI PR100MK2 In-ear Headphones,PG200 Updated Earbud MKII Impressive build quality Balanced sound with good bass. The overall sound signature of PR100 is warm, smooth and easy going to even a little lay back Bass extends to quite deep in a roll off fashion It is however good in quality with decent texture and just a tiny but of boominess to give a sense of fullness, but not overdone in anyway.