PSB M4U-4 BLK M4U 4 High Definition in-Ear Monitors Headphones Black

I mean you can make a very good sounding in here the big challenge is making it over and over and over again the same way well after the success of the m4 u2 and the m4 you won the next quest was for us to produce a in-ear monitor hence the m4 you for the big challenges the thing has to fit in your ear and be capable of fitting many different sizes of years in ears also have have to have the ability to isolate what's going on outside as much as possible of course the idea was to create a system with a crossover network built into it that had a dynamic driver for the low frequency and then a balanced armature for the high frequencies the big challenge is getting both of those drivers to work in unison together and to have the proper contribution to the overall target function which is this feature that we include in all our headphones called room feel so in order to apply room field to t