latest KZ TWS: SKS ($29 on aliexpress, $48 on Amazon (rip off))
5.2, nicely balanced harman curve with bass boost. Very good TWS collection for reasonable price. Wow! KZ nailed it!!
Still waiting KZ Z1 Pro (XUN driver 1DD).
I’m more impressed than CCA C10 pro, KZ ZSN PRO X, NiceHCK DB3 which arrived at the same time. It’s the TWS sounding better tuned than those three.
Upon arrival of KZ Z1 Pro, and Moondrop Sparks, I will do a comparison among KZ S1D, Z1Pro, SKS, Moondrop Sparks, and Airpods Pro.
[Update]
Although being a TWS, with proper ear tips, KZ SKS is one of the best tuned out of KZ from my 20+ KZ experience! Wow! KZ nailed it! Not a typical 30095. It sounds Harman-ish W-shape tuning, no big spikes, smooth and bass focused.
I can recall this sound signature as a bit brighter Mangird Tea. This brings me hope for AST, it might actually work! AST uses a bunch of #30019 BAs which SKS uses 1x custom-tuned 30019 +10mm DD.
SKS seemed to have a 3khz pinna gain peaks like the one of those in Moondrop Blessing 2 Dusk or Softears RSV.
If it matches your gain spots, it resonates very well for female vocals/guitar/snare drums.
I thought mid-range specialty was one of CCA's, but KZ seemed is leaning toward mid-range focused rather than typical V-shaped harsh tuning.
SKS has a wide sound stage, like CCA CSN, with bass-rolled Harman-ish with 3khz gain spot hitting tuning. (W-Shaped, warm, bass-rolled wide sound stage)
Honestly, I prefer this tuning over ZAX, it doesn't extend treble and air too much so that the technical weakness of KZ tweeter BA drivers could stay subtle.
Kudos to KZ engineers who tuned SKS.
SKS matches with the thin-skinned bass-boost type of ear tips, like Sony hybrids. I use one of UM's. SKS is generally warm. For $29 on Aliexpress ($48 on Amazon, nah) SKS is a good blind buy even compared to wired IEMs of the range, for someone looking fun and warm-tuned pair of IEM.
Only draw back is "CONEKTAD!!" "PALING" extremely heavy Chinese accent voice guide. I can not tell whether it is saying "Powering" or "Paring".