Oh if you own a CKS1000. Are the S2 worth grabbing. ABSOLUTELY. It is at that level of sound for certain. Sure they don't have the bass end of the CKS1000 but man they are enjoyable.. It is not really a matter of which one is better. Both of them have a different take on the sound and that makes them different phones and not the same. One is a stupid high end musical phone. One is a true audiophile style phone.
It is my opinion but I think everyone should have at least one neutral style sounding phone.. At least one. For your sound edumacation..Even if your taste in sound is more bass driven or treble driven or mids driven. Something to neutrality that adapts to more genres which makes sense. Now obviously if your music collection consists of the latest EDM, electronica, Indian dance music.French Hip hop. Than the CKS1000 does that better than just about any phone out there but if your music collection is deep with variety.. Neutrality is king here. The great thing is neutrality doesn't mean it is boring or treble happy. These S2s are just as immersive as the CKS1000.. On some tunes even more so. The S2 sounds more natural to my ears but the CKS1000 is more immersive because of how deep rich and wide the sound is.
I will do a proper A/B soon but for now. Both are extremely enjoyable phones. That joy you got from the CKS1000.. You don't want a down grade.. You want something that shows you something new. You want to double that joy.. Happy happy joy joy. That is what the S2 will do.. It is a phone worthy of anyone's collection just like the CKS1000 is.