FiiO - FD15

Fiio FD15. Dead neutral IEM that is relatively warm.

FD15, the build quality is amazing, I have never have metal iem so this thing is really amazed me. The sound is perfect for every music I play, but then again, I know nothing other that it sounds good, sounds really good or it sounds bad 😅. Also there are so many eartips included, after some try outs, I found one that really fit. A con: the cable and the iem is connected by some kind of round connection that make it tricky everytime i want to out it on as it keeps rolling. so yeah, it's GOOD in general.

Love the fd15 great single dynamic iem

Tanchjim Origin, and in 2nd place FiiO FD15. I love KZ Zenith as well, it has elements of those other two for a fraction of the price.

The immediate impression people would have is the Origin is brighter where the FD15 is explicitly rolled off. In bass the FD15 has better texturing and decay where Origin has better layering and midbass snap. Overall the Origin sounds more detailed but EQ'ing the FD15 to be a bit more v-shaped closes the gap well. I don't feel the need to EQ the Origin at all which is rare for me, I could smooth it out slightly but I don't think it would be that noticeable. I do feel you need to EQ the FD15 a bit to extract the technicals but afterwards you can argue the bass is overall better than the Origin and the lower-mids more natural. At the end of the day Origin is just more transparent for a neutral IEM which is what puts it on top for me.

I own FD15, JD7, and FA7s and love them all, especially since they share nearly the same shell between them.

You want to get a single DD with a flat/neutral tuning. Look at graphs of the Fiio FD15 and the Intuaura Balance. Those are my suggestions. KZ Zenith is another option if you want to spend less money. It has a similar tuning.

FiiO FD15. Real musical with just enough bass. Possibly my favorite IEM

Out of those you mentioned I only have the FD15, but have heard the IE600 fails over time so I'd stay way from that at least.

How do you feel about the FD15? It’s personally one of my fave IEMs

FX17, FH19. Also FD15, I think they're underrated in their price bracket.

I want that cable lol. I don’t need any more single dd iems though. Tanchjim origin, dunu falcon ultra, fiio fd15, ea500lm, tripowin Olina se and kz zenith have been great for me. Everyone is sleeping on that fiio, imo I like it more than origin.

Fiio is always going to be a hit or miss, most of the time being a miss, but I love the fd15, fh9 and my first set, the fh3.

I’d say the et142 is a fantastic choice, same with timeless 2, but since you like the lm the et142 would be closer. Both have 4 different nozzles to tame or boost the upper mids/lower treble. Timeless 2 also has those bullet nozzles that create a spacious sound…a little different but spacious. Ea1000 is pretty much the lm with red nozzles (or the og ea500) but slightly better. I prefer the dunu falcon ultra and tanchjim origin for single dd in that range (also fiio fd15, which is $150). Rather than those 2 planars I’d get the s12 2024, imo it’s still the best planar aside from s15

Love my FiiO FD15's. Didn't shatter the bank account and love the sound.

Even though the sm4 graph shows alot of sub bass the dip in the mid bass makes it sound faint. The lower midrange pretty important if you want more like "presence" and "weight" to the vocals/instruments. I always felt like sm4 was close to great but its held back by the pzt implementation. Sometimes you get a strong sting of it and it can be good/bad depending on song quality. It can get very fatiguing if you're not used to pzt/planar zing in the higher regions. I think if you like the single dd sound and want to refine it get the fd15. Its a vast improvement over salnotes zero. It sounds more tighter and defined/punchy in the bass. Vocals sounds extremely vivid and musical. The treble is my favorite part of it because it sound airy and sparkly yet non harsh. I would of recommended original moondrop kato (if you can find it 2nd hand or used market) but It might lack some of that treble energy from salnotes zero in exchange for better weight and mid clarity.