@dazzerfong
I owned tia fourte regular, trio and now noir.
I left 64a after sold the regular forte with disappointment due to treble elevation. In between had
Ee phantom for 1 year
Ier-z1r 6 month
Then Trio. For quiet some time.
Well fourte regular is very unique, it has nothing a like any other iems. It has huge echoing ability, very transparent, best bass control among anything I heard. Yes I find regular fourte has better bass control over noir.
The regular has a very u shaped sound and sometimes notes feels swallowed, like its so faint and low sound weird not coherent.
Noir dont have this problem.
Noir are very massive and powerful. Its a beast huge sound authoritive, very large wide bass and deep. Overall tonality is warm and thick.
The treble is nothing a like regular fourte or trio. The noir treble feels heavy thick and a mix between electrostatic and some wet cold water droplets. Yea weird I as said lol
Once you get in to it and get accustomed the treble is so delicate that you forget all issues that are treble related....
Vocals are different from noir to regular. I will still give an edge to regular as they are the most impressive breathy natural voices I ever heard.
Noir voices are also very natural and good but different maybe more on the warmer side.
Trio is also one very special iem, I love trio a lot I think a lot of people remember how crazy I was about them. I praised them so much that 64a made the 30% discount till stock runs out hehe.
I truly did love them and do much more over the regular fourte. As they are very fun fast visceral bass treble is smooth and zingy. It has more bass slam. It have all the attributes of the super intense fun audiophile iem.
But they day I bought noir things changed widely, at first I still preferred my trio but with days going by I realised that the noir had way much better mids, very massive bass. In comparison trio bass is fast and has quick burst once it finishes producing the bass its silent and it disappears. Noir is not like that, noir bass is vast wide very surround like feel and has more presence.
Trio treble is more piercing then the Noir ! Yes can you imagine a fourte lol and has less treble then trio ???
Treble in trio is sharper and has a nice metallic resonating zing, I really loved that but at some times it was a little to sharp but occasionally. With noir no treble peaks like that for me
To summarise that,
You want best audiophile best iem. Go fourte regular as its the closest to the transparency and analytical.
Noir is a very high end iem with every package possible! Warm bass thick easy treble resolution details nuances and so so on.
I keep saying noir is a mix of this 3 headphones, mdr z1r, hd820, he-1.
Trio is very pleasant, has a superb drive. You want to experience a nice impressive hardcore musical feeling go with trio. It will immerse you in to sound like nothing else. It has also one great ability to be a very good all arounder to.
You want to save money go for trio its really worth it.
But by all means do your self a favor buy high grade quality custom cable it really does improve sound over stock 1!