Is now 22 Days with the iO-12. I want speaking about several things, but specially about the sound.
First, I will speaking of the negative aspects of the Dalis:
1. In fully passive mode the sound is very clearly not so good like in BT or USB-C modes. The Solitaire T (ST) is the ONLY headphone that providing excellent sound quality in BT, USB-C or fully passive modes.
2. ANC isn't so good (at least so good like the ST, and obviously not so good like the kings of ANC, AirPods Max, Bose QC Ultra or Sony XM5), but I still want testing the iO-12 in real life situation when I taking two flights next month (specially because the ST giving me (and others ST owners) big surprise when I doing this last year. But today, in my tests, the ST is still the best than all premium ANC headphones in the ANC category.
3. The big size of the headphone and carrying case. Yes, the headphone is big (for a ANC headphone, and isn't foldable like the ST that is more small AND even foldable --- all others premium ANC models aren't foldable). Yes, the iO-12 is portable, but people will looking at you possibly more than you want, and the case is occupying more space than ALL others ANC headphones in the market.
Ok, now the positives:
1. The playback buttons are simply FANTASTIC. I saying before that I saying in other thread/s that I'm happy paying 100 EUR extra for this level of experience. Well, I think I will paying even 150 EUR. This is how important this aspect of a BT/ANC headphone is for me. Dali doing the perfect job here. 32 volume steps in iOS/macOS, instant access to changes in volume, and same with play/pause or next/previous track. BUT not only this, but the buttons, in difference with, for example, the Bose QC Ultra, don't making irritating noise when clicking. WONDERFUL.
2. Sound. The sound quality of the iO-12 is just truly excellent.
The tonal balance ---that don't necessarily translating in excellent timbral qualities of sound reproduction--- is simply phenomenal. I think the iO-12's curve is actually more flat/linear/reference/correct than the ST's excellent curve. No offensive/serious dips or peaks and the iO-12 isn't have the Harman curve, and for me is actually more correct than this, in my opinion.
The ST having very tasteful lift in low bass that possibly giving more accurate representation of sound. BUT the Dalis also have very good extension, except that isn't having the lift of the ST and this is why I'm saying is more correct from linear point of view.
The iO-12, in difference with the ST, is depending more on DSP implementation for the very excellent tonal balance, BUT DSP alone can't giving the quality of sound reproduction of the Dalis. And here is where some of the genuine research and development of the iO-12's driver, damping mechanism, etc. are clearly audible for discerning ears. And I must adding that the timbral qualities are first class too.
I mentioning here (and even more in the ST thread) that, for me, reproduction of more high frequencies is the most difficult frequency doing right. After probably about 40 hours with the iO-12 and many different types of songs/genres, the high frequencies reproduction is remarkable, truly excellent.
Yes, people with typical taste for bass-heavy sound will thinking the iO-12, even using the subtle/tasteful 'bass' setting isn't so good, and will saying something like this,"My Sony, Sennheiser, B&W, old Beats model headphone (or even other more cheap bassy sounding model!), is sounding better". But all those others headphones destroying, for example, classical music reproduction, specially when is orchestral, or good masters of 1970's/1980's rock albums. The great thing about a great headphone is that isn't only excellent with classical music but with ALL genres, at least "great" meaning that is genuinely presenting the music as close as is showing in the recording (people don't always liking seeing the reality of a recording, specially in our 'loudness wars' age). The iO-12 is even doing extremely decent job with 'loudness wars' / terrible masters.
But, isn't only the very excellent tonal balance of the iO-12, but a very credible open soundstage, very uncommon for closed-back headphones. I will not saying the typical stadium or similar comparison (places that actually normally having very bad acoustics, by the way). I will only saying is that you having very sufficient space for instruments having great individual space in the sound stage.
3. Multipoint, after my discovery of yesterday, is absolutely fine.
4. I having already 4 long telephone calls with the iO-12 (with people I don't know) and they never complaining about poor sound (or maybe they're polite!) and asking me repeating or saying they can't hearing me well. So, even if not comparing directly with my AirPods Pro 2nd Gen and AirPods 3rd Gen in telephone calls, I know already that I'm confident is working sufficiently/very well.
5. Comfort and head adjustment. The iO-12 is very possibly the first ANC headphone that, after several hours in my head, I don't need adjusting the position...and is, of course very comfortable. Maybe this isn't so important factor for many people but, after 3 weeks and maximum of 4 hours of continuous use 3 -4 times, I'm experiencing how wonderful this is. Even with the great ST I adjusting several times in long sessions, but also with the 5909, Bathys (very constantly!), h95, px8, AirPods Max (very constantly too!, etc.).
6. Accessories. The iO-12 coming with excellent quality construction of the travel case and the cables. The best quality cables are, without doubt, the 5909's, and the 5909's case, even if of very good quality and beautiful design, can having more damage more easily than the iO-12's case. The h95 case is ultra solid but is impractical and scratching easily, and the cables, even if of very good quality, are very stiff. The cables of the ST aren't so good quality like the others, but the Bathys and px8's cables are really very cheap, but this last 3 models (ST, Bathys and px8) having very more practical and portable travel cases even if the quality materials aren't premium like iO-12, 5909 and H95's cases.