Some Info that I found from Faaeal taobao, can't find the Ancestor edition tho.
Iris 1.0
Version: Black
Characteristics : the original Iris, also a classic version (listed in 2013). The overall tuning is balanced.
The low frequency is of quality and quantity, and the bass has slam/thump ; the mids is slightly forawrd, the vocal is more close to the ear, warmer(?), the details/texture is considered very good at this price, especially the folk/female voices are especially good; natural treble, the details are average, the tuning is smoother, and overall listening experience is comfortable.
Iris 2.0
Version: Black, Black transparent, Bright blue
Same driver as 1.0, he tuning is a continuation of the 1.0 trend. The difference is more functional. Secondly, because of the upgrade of the wire, the overall hearing of 2.0 is slightly more transparent than 1.0
Iris CE
Version: White transparent
Brand-new driver, different from 1.0/2.0. Tuning towards the vocals. The pursuit is a better vocal experience at this price.
Sound features: bass is very little, basshead please avoid! ! The vocals are prominent, clean, clear and smooth, slightly warmer(?), and not tired of listening for a long time. The high frequency is brighter than the previous version and the details are better.
Iris CE
Version: Grey transparent
Same driver as white Iris CE, tuning follows 1.0/2.0 but a lot of adjustments have been made based on feedback from many listeners of the Iris CE white transparent.
The low frequency continues the characteristics of 1.0/2.0, and the sense of volume is suppressed(?). people who prefer more bass can basically be satisfied. At the same time, the mids and treble shielding(?) is also moderate. The mids is more prominent. When Aunt Cai’s(a chinese singer famous for her vocal) voice comes out, the thickness and strength of the sound can be intuitively felt, and the sense of details such as ventilation/breath is outstanding. The high frequency part is slightly brighter than 1.0/2.0, and the auditory sense is more exciting and radical. In some songs, it can better show the level and emotion of the song.