The sound output was fine for one month.However its bass started to increase and all we can hear is background music of a song without any https://lyrics.Not at all user friendly, in case of prolong use your ears started to pain as the outer surface is larger than needed.
When plugged in lenovo mobile, it didnt work properly and I guess its the same issue with intex and redmi mobiles.While the price is around 300, one can use it like only for two months so its not all worth the money.