Haha. Did u notice, that the T1 has net with holes, while T5p's housing is fully sealed? T1 is what they called "semi-opened", while T5p is closed.

Nah, while T5p may have the same Tesla driver, they are tuned differently, so even the same driver is used, the sound is different.

3.5mm jack? It's just that T1 is designed for studio or desktop amp use, so for convenience on the setup, the default jack is larger. T5p aims for portability.

Why not get an IEM? Wait for the Heaven 7/8 then. Haha. Actually, IEM and headphone sounds so differently. If you don't mind the larger size, then by all means go for headphones. The feeling is different.

wait... please...

Hahaha.

Maybe it'll be a surprise for you? The Heaven 7/8

LOL. More drivers =/= SQ, especially at the high-end stuffs, since they have specific taste or sound signature which might not appeal to all.

airy n more airy? lol. my friend personally prefer adagio II compared to III. Gotta try your own source to know which one is more suitable. After all, I'm more to Heaven series than Adagio series

Heaven 2,4, 5, 6...etc.

Well, yeah. the flat cable could be a nuisance, so that's why we often install a clip on to the shirt so it won't be a bother lol.

Lagipun, I kinda prefer the smoother sound of Heaven compared to Adagio.

Anyone has tried replacing your FAD iem with either SpinFit or Spiral Dots tips?

Would you like to share your impressions?

Yup. Thanks for the impression. Would like to hear if there's an improvement of fit (most important) and SQ.

I couldn't really discern significant difference yet even after trying both spinfit and spiral dots. Perhaps environment is loud, or my gears ain't that revealing? I'm not sure. Using Ak120->FAD Heaven C.

Btw, spiral dots somehow makes the sound become darker a little bit.

If it gives u better seal and fit for your ears, why not? Try the smaller sizes first, they might snuck into your ears better.

Heaven 7: Compared to 8, it sounds much more clearer due to the lack of thicker bass. However, it has somewhat rougher overall texture, and the bass slams a little harder and sharper. Lean towards aggressive and more exciting sound. Would recommend for emotional songs and classicals. Pop songs sound very clear but a little "edgy". Sounds good with better amp but I couldn't turn up the volume for too long as it's quite piercing to my ears.

Heaven 8: Compared to 7, or any other Heaven series in my memory, it's the most calm sounding one. First thing to notice is the lack of typical FAD sparkle. The bass is the second thing comes to my attention. It's definitely thick, and in some tracks, overpowering. But I can hear that it's not the main attention of the music. The thick and much rounder bass could be a good complementary to vocals to bring out the calmness out of the voice. Everything sounds so orderly, not lacking details even without the sparkle. One might find it dull or boring, I find it rather relaxing to listen to. Paired this with Lotto Paw Gold, details are coming out rather convincingly. Used this on LP? The staging extends beyond the earphones. Can clearly hear the instruments outside the headstage. Scales great with good amps as it sounds even fuller and clearer while doesn't bring pain to my ears as it is without the elevated treble.

(Source: AK120 mk1, Lotto Paw Gold; Amp (in certain occasion): Mass Kobo Balanced amp)

credit to head-fi.org for the source of pictures in the forum
Source

Dynamic driver? It's been a long long time since the last implementation.

The house sound is unique due to the echo you hear I think. It's airy, and almost everything sounds more airy than other earphones you heard. I guess that's the magic.