Nice guys! I personally love the design of the CM5. Can you describe how their soundstage and instrument separation is? Also: piercing highs? Which other IEM's do the CM5 remind you of?
Had a little more time to compare CM5 & IT01 (with Tidal hifi, Zuperdac-S using Tennmark wide bores on both) and here are some thoughts.
First off the price for the CM5 is ridiculous (at least for those in the US). The case that it comes with is my most used case as I shuffle different earbuds/IEMs between home/work. It comes with a nice rubber zipper handle that tucks away with a clever strap and is easier & quicker to open/close than the typical metal zipper handle. I'd easily pay an extra $4-6 for the case by itself. The earphone is lighter and more comfortable to use than the IT01, which is already quite comfortable. This is one of the most important things for me; if it ain't comfortable, it's not going to get much use.
Soundwise the CM5 is comparable to my EDR2, perhaps with wider soundstage and handles many genres very well. Its darker, warmer to me than the IT01, easy to listen to for long periods without piercing highs and maybe some minor sibilance but nothing major.
The IT01 is more immersive in comparison to the CM5. This can be noticed while playing the track
Wandering by Yosi Horikawa. The crunching of gravel at the beginning is super detailed, revealing, and transparent. As the track gets into it, the atmosphere surrounds you, I can sense the distance in layers of the birds and other animal noises. The IT01 is more enveloping, adding life and presence to this jungle ambiance. The CM5 is more 2D in this manner. Also noticeably different on this track is the wicked sub-bass, it goes deeep without overpowering or muddying up, just awesome.. There's also no sibilance and treble is very well done, but if you're sensitive to bass it can be more fatiguing than the CM5.
In summary, the IT01 is smoother with better imaging and soundstage, but the CM5 really holds up its end considering whats available in its price range so I have less fear of losing or breaking them as they are easily replaced. I use them both equally and consider them to be my daily drivers along with the Tinaudio T2.