ZMF Caldera. I prefer it to Susvara, Abyss 1266, STAX SR009S and Final D8000. It embodies the incredible timbre of HD 650 with the advantages of ToTL planars. kinda like what a suped up planar 650 would sound.

yes pretty good set. Quirky fit and slightly lacking in the technical department but vocals sound amazing

I am kinda not convinced about the 'high end' quirky class of IEMs tbh. Every single Noble I've tried have been lower treble canon tonal massacres. Didn't like any Empire Ears hype beast either. They are ok I guess but for that price? IDK. I genuinely liked Traillii and Jewel but much prefer the...

They are actually real carbon fiber

Yes. M9 works wonderfully with all genres out there. No particular affinity to any genre.

Lotoo PAW S2, Questyle M15 and CMA 15. Occasionally with XDuoo XD05 plus

yes. M15>PAW S2> L&P W2> RU6>M12

Fit and how they seal is extremely crucial as well. Push too deep and there will be an unbearable vacuum suction and blunted dynamics. The key is to softly seal and not pushing too deep.

M9 will be very very difficult to counterfeit given its made of magnesium and real carbon fiber faceplate which results in its unique lightweight character and skin feel. You'll have to copy the stock cable, case and tips as well, all of which are exquisitely made (cause Japan lol, made in...

Not better, slightly different type of presentation. Sony DAPs will give a fuller, lush sound. Different from the crystalline, full bodied yet razor sharp notes of the M15. Chill vs. Reference. However top end sony duo (wm1a/1am2 and 1z/1zm2) are different beasts altogether. Great sound with AK...

Yes. Drives comfortably well from the balanced out on high gain

I've tried mine with 4G data as well today, no issue noticed (LG G8X Thinq). Have you guys tried with different phones as well? Does the issue persist?

Different. Z1r is more V shaped with endgame tier bass response. M9 has superior vocals and still really good bass. Both are better than the IEMs you listed but preference is wildly subjective

Incredible synergy with HD 650, K371 and Edition XS. Also unleashes the true potential my IER M9. What an awesome powerhouse! I also tried the CMA 12 Master briefly and it was shockingly good for the price. I'd suggest Questyle to take BT dac amps and DAPs seriously as well. A snappy android DAP...

Speaking of ZMF, I absolutely love their Suede and Fenestrated leather pads for 600/650/6XX that had been released a few while back. Sounds incredible and much comfier and better sounding than the stock pads IMO. Completely eliminates any hint of veil or midbass hump on my HD 650. Also...

Already tried Link 2 Bal. Brilliant product but not at the level of M15 unfortunately, more of an M12 contender. Moonriver 2 was godawful and Shanling UA5 was decent. I own the XM4 as well. Here's the funny thing, XM4 sounds absolutely awful with the supplied tips but magnificent with the Sony...

Trying out my M9 with Questyle M15 and the experience is nothing short of amazing. M9 sounds big and headphone like with it that too out of the SE on low gain (haven't tried out the 4.4 balanced out yet with M9 but the balanced out makes my Edition XS sing. Good synergy with HD650 as well). If...

Questyle M12 or the new M15. Incredible synergy. Avoid anything ifi. Sounds pretty disappointing on both idsd signature and hip dac (muddled, cramped and low res for some reason). Tried with paw s1, pretty good. Link 2 bal should be great as well given m9 sounds brilliant on xd05 plus.

Hope you'll like it. They are neutral with provided ep ex 11 tips (don't bother with the foam ones, absolute trash). Try them with final E type if you want a bit more bass and body

-No, M9 is more neutral and transparent. U12t sounds oversmoothened and kind of bland in comparison (M9 is smooth af as well with zero harshness but not muddled) -Fit is awesome if you have a medium to large ish ear. Extremely isolating. People with small ears might have trouble with the fit...