I think
@gyx11 or
@twister6 has demo'ed the ckr9s briefly the other day at ath booth, I do not know of his impressions of them though. But I am very interested in this comparison.
Sorry, not me. I have tested CKX9, not CRR9. X9 was just OK, nothing special, similar to Beyer DX160 and Monster iSport Victory. Strong bass, recessed mids, warm sound, ok details.
Still have my DGS100 going through burn in, probably a total of 20hrs now, mostly in free air with maybe 20-25min of total listening. I don't trust brain burn in when you focus on one pair of headphones, especially late in the evening when kids go to sleep and I can sit down and relax - I always afraid my mind will play tricks on me lol!!!
I'm not gonna hype these up, just tell you how it is. Between 3 hybrid IEMs I tested, AX35/Altone200/DGS100, I would choose DGS100 hands down because of it's sound signature that fits my taste. Hisoundfi added his comment where he would choose these over DN1k as well, so that says a lot as well. Seems that hybrids nowadays tend to be either too bright/peaky in upper mids/lower treble, or recessed/veil. DGS100 nailed the sound with a very ear-friendly tuning. 20hr burn in is a must, and who knows, it might change further. I never had a pair of headphones that seen such a drastic change through burn in, that's for sure! The mid-bass hump is still there, but it settle down significantly and balanced well with sub-bass. Hard to tell what's going on with lower mids because there is some bleed from mid-bass, but upper mids are clear and detailed. That sharp dip around 6k area does take an edge off brightness which could be perceived as a very little step back in clarity comparing to other multi-BA driver IEMs (IM03, IM02, Doppio, UE900). But that dip also makes upper mids sound VERY smooth and related, reminding me of W40 upper mids. Treble is crisp and detailed, and not peaky at all. These are truly the first hybrids I can see myself wearing/listening to for awhile without fatigue. Soundstage is wide in both width/depth now. Beside a port on the back of the shell, these have anther port opening facing outwards on corresponding right/left earpieces, instead of a typical pinhole at the bottom of the nozzle. So, beside soundshaping control those also help a lot to add air to the sound. Fitment is very comfortable wire down, and I absolutely enjoying their foam eartips, my favorite right now.
So in my opinion, if you have been waiting to try out a pair of hybrid IEMs and not after a bright analytical sound but rather want a unique fun sound - these get my high recommendation. I don't want to compare them to other BA only or dynamic only because they are in a different category. If you are on a budget and looking for a single pair of in-ear headphones to invest money into, these might not necessary be the end-game pair. But if you are a headphone enthusiast who understands and values a sound quality and has a collection of headphones with different driver technology - these will be a worthy trophy on your shelf with a great value under $80 (once you sign in to Penonaudio).