By the way, I don't care what the graphs say, the CKS1000 is the best sounding universal IEM I own right now. I have over 100 hours on it now, and the instrument separation and placement is just astonishing! It has great width and depth (back and forth) within the soundstage. The bass lives up to its name of "solid." Actually there's not too much or too little bass, it's just perfect and clean. Backing vocals are behind the lead vocals. I don't know if it's the driver they chose or this chamber system, but I have heard anything this good in a universal (especially a dynamic) accept for maybe the ASG-2. I'm still waiting to hear that again. And I still have love for my FXZ100 (it keeps getting better and better), but the CKS1000 still outpaces it. My advice would be to stop listening to those who comment on earphones/headphones just based on graphs, but who haven't actually heard the product. Sure, I will concede that a a FR can give a piece of the picture (sometimes), but it definitely can't give the whole picture until you've heard it yourself. Happy listening!