No, i listened them only 3-4 hours with high volume, though its becoming balanced for sure. And i think this headphones are waaay better than FXZ 200 :) thank you for making me choose them. I am happy with them. They are very good :)

Hello, i have my CKS1000 now :) but i have an issue, my right side hits 50-30 hz more, and left side 60-100 but in songs i can feel right is hitting more bass. I dont have a seal problem. Tried with many tips. Is that normal?

Hello, i sent my FXZ-200 back to japan because i really didnt like them. Cursed on them. I'm looking forward to buy CKS-1000, do you think they would work good with iPhone out? I read all the things said in this thread so i think i will like their sound.

I am having the same issue... But i have left as more powerful. I contacted my seller and he offers me full refund. Nothing i can do... If you find a fix today i might not send them back, good luck 

Hello. I made a post about my problem in fxz200 in thread, but i was very confused and thought my headphones had a problem. Now my friend tested it, i'm even more confused. He says headphones are very balanced, and fine. I'm having a seal problem with my right ear @ normal use. Though when i use...

Anything i can do except replacing?

Its not the seal, i am sure. I tried everything. Bass simply "wubs" at left, normal at right. I prefer the "wubbed" one , when i switch still they doesnt sound balanced. I really waited so much for these, freaking hell... Now i gotta send them back to japan and blabla.....

So much thanks to your help. I have so Many tips as well. Im using philips' ones. I will try the other ones and original tips as well. Thanks for the help !

Thanks for the help. I have so many tips as well. And i putted Philips ones for more comfort. Though didnt felt a air , i will try more tips. And call a friend, to check the balance. So much thanks. I bought these headphones reading the comments this site :)

Thanks for the help. I replaced left and right. But pushed them upside down, so it fits L/R, bass seems normal now, What? Put them normal, left is dominant again. Srsly.

Hello. I bought these just 2-3 days ago. But left bass is stronger than right. Is that normal? If not normal, more burn in should balance them?