I will update\/edit this review when I actually get a chance to test the product , but my first response be this : I be bum that they do not come with a case . I spend a long time do side-by-side comparison of a bunch of earphone include Denon , Sennheiser , Klipsch , Skullcandy and JLabs . I end up settle on the j3 because of the review and the case -lrb- sorry , but I need one and it be include -rrb- . at the last minute , I decide to upgrade to the j3m with the microphone . in a flurry of comparison , my head be spin and I do not realize I be sacrifice the case for the microphone . I assume that the microphone be what I be pay extra for , and that everything with the j3 would be include with the j3m . but , you know what they say about people who assume ... I 'll edit this review once I get a chance to burn they in and put they through they pace . but they be start out behind the eight ball ... UPDATE : I have have these play all day , not the full burn-in time require , so I will give they the benefit of that for now . however , as I be listen , I have put it through it be pace . Miles Davis , the Head and the Heart , Apocalyptica , and Alexi Murdoch among other . probably more acoustic than anything else , though -lrb- which be my genre of choice -rrb- . twice , when a great song come on that I want to rock out to -lrb- big parade by the Lumineers and 99 problem by Hugo -rrb- , I crank the volume only to cringe and immediately turn it back down again . the word that come to mind be `` muddy '' . it be as if they be try to add bass where it do not exist and then it just clog up you ear at the slightest hint of it when it be really there . so here 's my thought right now : if you think Kanye be `` rap '' and Nickleback be `` rock '' , and you be afraid of jazz because you only know Kenny G , then these be the earphone for you . the great news for you be , nothing will make you music sound better , so just get these and be happy . but if you really enjoy quality music , and want to hear it as it be intend , then keep look . you will not find they here with a $ 25 pair of sub-par earphone that distort when you turn you volume up half way . spend the extra money and be happy . I know that be what I be go to do . the sad truth be , I leave tomorrow on a business trip , so these will unfortunately have to do for now . I will give they they ample burn-in time -lrb- which will include plug they into my laptop and let they run through the burn-in sound loop on JLab 's website for the next week as I sleep -rrb- . who know , maybe a miracle will happen and they will become worth keep at the end of that . Stay tune , and I will let you know ... UPDATE -lrb- again -rrb- : okay , I have own these a month and I have to say they be the worst headphone I have ever own . the `` muddiness '' that I first write about have not go away . some song sound decent , other hurt my ear ; nothing have improve . not only that , but if you wear these while you be move -lrb- and let 's be honest , who sit dead still to listen to music ? -rrb- , the rub resonate through the wire and can drown out the music . I wear these for my commute and while I be walk I have have to run they up through my jacket to try and limit the amount of movement . whatever the coating on the wire do to try and make it difficult to tangle -lrb- difficult , not impossible -rrb- , it end up conduct the sound of the friction quite loudly . and , last but not least , the rubber cord wrap where the wire and the plug meet be already show sign of crack -- which I be sure be only a indicator of the overall build quality of these `` quality '' headphone . to top it all off , I log in today to find out how I could return these and get my money back , and it seem as if I miss my 30 day free return mark by one day . so I can either take a loss on they and get a partial return credit as well as pay to send they back , or I can count my loss , give up , and stop expel unecessary energy on money poorly spend . here 's my advice : spend another $ 20 -lrb- or more -rrb- and get something much better . you will not be sorry . and to think , all this negative energy start because a carry case be not include . I wonder if I would have think differently if it have . oh well , you only get one chance to make a first impression and it be safe to say jlab more than blow they opportunity with I ...