Hidizs MP145 IEM Review

[ZolaIII]

I have read that multiple times, but why is that? The HP/IEM-ear canal is still a closed volume, whether the HP/IEM is closed or open back… Isn’t it one of these myths with no real science basis?

It's a space/time thing.
If something is closed small volume or no volume at all direct in ear chenel there is no bounce, it's dry and direct. Some IEM's have side went tuning for highs but they are not open back. Planars don't move almost no air they more shiver (and do it fast but there is no feel of kick or attack in it) than bounce like traditional cone driver's. Open back headphones don't seal, they breed and you have better back to front refractions and a bit of the back from surrounding. This give them the sense of space but it's not like a speakers especially not a big room with good reverberation and ISO 3382-1 early-to-late arriving sound energy (as it's not front to back but on ear). So you can achieve similar effect or simply more of it if you add wet reverb. Most of the positioning audio or spartial if you wish do bring it in front (or somewhere else in case of surround) sort like a speakers but it becomes smaller by doing that.

 

[CedarX]

It's a space/time thing.
If something is closed small volume or no volume at all direct in ear chenel there is no bounce, it's dry and direct. Some IEM's have side went tuning for highs but they are not open back. Planars don't move almost no air they more shiver (and do it fast but there is no feel of kick or attack in it) than bounce like traditional cone driver's. Open back headphones don't seal, they breed and you have better back to front refractions and a bit of the back from surrounding. This give them the sense of space but it's not like a speakers especially not a big room with good reverberation and ISO 3382-1 early-to-late arriving sound energy (as it's not front to back but on ear). So you can achieve similar effect or simply more of it if you add wet reverb. Most of the positioning audio or spartial if you wish do bring it in front (or somewhere else in case of surround) sort like a speakers but it becomes smaller by doing that.

Ok, won’t argue more, but I’m not convinced at all: how does your tympanic membrane “knows” whether the transducer membrane is large (e.g planar) or small (e.g. BA)? For an IEM, It’s all about an air column pressure variation, whether it’s “closed” or “open-back”, how does it make a difference? The vent hole is to relief the pressure built-up when you insert the IEM, that’s a different purpose…

 

[ZolaIII]

Ok, won’t argue more, but I’m not convinced at all: how does your tympanic membrane “knows” whether the transducer membrane is large (e.g planar) or small (e.g. BA)? For an IEM, It’s all about an air column pressure variation, whether it’s “closed” or “open-back”, how does it make a difference? The vent hole is to relief the pressure built-up when you insert the IEM, that’s a different purpose…

By millions of years of evolution when your life literally depended if you can hear and identify threat on time to fight back or run away.

 

[markanini]

I've assumed it was due to the closed back volume reflecting the soundwaves, which in turn causes cancellations throughout the frequency range. Frequency range reproduction is linked with perception of spatial qualities, as HRTF studies have shown rather granular differences in frequency content convey directionality. So it's not that far fetched to me that closed backs are less spatial than open backs as a general trend. I say this as someone that personally prefers closed backs.

 

[LIΟN]

The picture I took while organizing my earphones earlier. I think the shell design and texture of mp145 are prettier the more I see it.
Sound and performance are the best IEMs that bring the most speaker-like (and perhaps more speaker-like) experience when enjoying personalized HRIR.
Even after experiencing several earphones, I couldn't find anything beyond mp145.

 

[InfiniteJester]

View attachment 368169

The picture I took while organizing my earphones earlier. I think the shell design and texture of mp145 are prettier the more I see it.
Sound and performance are the best IEMs that bring the most speaker-like (and perhaps more speaker-like) experience when enjoying personalized HRIR.
Even after experiencing several earphones, I couldn't find anything beyond mp145.

They are also my favorites by far.

They are better than most headphones.

They have really reconceptualized what IEMs can be for me.

 

[JCM800]

I'm thoroughly enjoying mine, even if I did overpay These are my 3rd Hidizs product and they're all great value for $ IMHO.

 

[herr.jemine]

I'm also very impressed with mine, the sound is simply beautiful, out of curiosity I got the 7Hz Timeless AE and listened to both in comparison, so far I can say they are not that different, the Timeless have a bit more pressure in the bass range, otherwise they sound very similar - but for value/ $ the MP145 are unbeatable!

 

[InfiniteJester]

I'm also very impressed with mine, the sound is simply beautiful, out of curiosity I got the 7Hz Timeless AE and listened to both in comparison, so far I can say they are not that different, the Timeless have a bit more pressure in the bass range, otherwise they sound very similar - but for value/ $ the MP145 are unbeatable!

There is something about planars in IEMs that works extremely well and I don't think other drivers can replicate easily.

But I have never tried ESTs, which apparently are even better for high frequencies.

I wonder how well a set with 14,5mm planars (I'm not a fan of the microplanars I have listened to) and ESTs would work.

 

[herr.jemine]

There is something about planars in IEMs that works extremely well and I don't think other drivers can replicate easily.

But I have never tried ESTs, which apparently are even better for high frequencies.

I wonder how well a set with 14,5mm planars (I'm not a fan of the microplanars I have listened to) and ESTs would work.

I have never heard ESTs either, I don't like hybrids, i don't like BA drivers , and a shure KSE1500 is a bit expensive

 

[Jimbob54]

Just got a pair of these. Some thoughts:

As per, stock tips dont work for me - Spinfit 145XL or Moondrop Springtips XL for these ears

These are huge and heavy shells. Will need a good combo of ear shape and tip selection to stay put. Little ears need not apply. . Luckily I have quite large ear bowls and these are nice and smooth shells on the inner face.

I prefer a lower 3k hump than Harman so I find the stock tuning very good. Experimenting with some mild EQ but honestly on first listen these dont need it.

I can certainly see why people rate these, especially if you cant use EQ easily. I have recently acquired these and the TE Nova and must say I find both excellent (The Nova for my ears NEED EQ, these dont) As to whether you would get either of these over some of the well reviewed $20 or $50 IEM we all know about on here would come down to preference and budget. I prefer the fit of these (and the Nova) to the TE Zero models though

 

[herr.jemine]

it's nice to have headphones that work without EQ!

The MP145 are great, the Timeless AE are good too, I have both and find the MP145 to be a slightly more relaxed all-rounder.

I let the MP145 play for about 15 hours (burn in) I don't know exactly that makes sense or not - subjectively I think the mid bass is a bit better now, that's probably my imagination, i dont know...

 

[Turambar]

I also use the MP145 without EQ.

My ears are quite large, and have no problem with the fit.

A very nice pair of IEMs, a little bit too expensive taking into account the competition.

 

[herr.jemine]

little bit too expensive taking into account the competition.

which competitors - letshuoer s12 ?

 

[Turambar]

which competitors - letshuoer s12 ?

Competitors in overall sound quality, not in terms of planar technology.

 

[InfiniteJester]

Just got a pair of these. Some thoughts:

As per, stock tips dont work for me - Spinfit 145XL or Moondrop Springtips XL for these ears

These are huge and heavy shells. Will need a good combo of ear shape and tip selection to stay put. Little ears need not apply. . Luckily I have quite large ear bowls and these are nice and smooth shells on the inner face.

I prefer a lower 3k hump than Harman so I find the stock tuning very good. Experimenting with some mild EQ but honestly on first listen these dont need it.

I can certainly see why people rate these, especially if you cant use EQ easily. I have recently acquired these and the TE Nova and must say I find both excellent (The Nova for my ears NEED EQ, these dont) As to whether you would get either of these over some of the well reviewed $20 or $50 IEM we all know about on here would come down to preference and budget. I prefer the fit of these (and the Nova) to the TE Zero models though

What nozzle do you use? I use rose gold, red is the one with less "pinna gain".

Competitors in overall sound quality, not in terms of planar technology.

When it comes to staging, I don't know how many IEMs can compete with the MP145s.

I love the staging of the ARTTI R1, but they sound very inferior in every other regard.

 

[Jimbob54]

What nozzle do you use? I use rose gold, red is the one with less "pinna gain".



When it comes to staging, I don't know how many IEMs can compete with the MP145s.

I love the staging of the ARTTI R1, but they sound very inferior in every other regard.

Whichever they ship with- looked more pink than red so I guess the rose gold? Makes sense if so as my eq im developing adds about 1db around 3.5khz

 

[InfiniteJester]

Whichever they ship with- looked more pink than red so I guess the rose gold? Makes sense if so as my eq im developing adds about 1db around 3.5khz

If you want to add to that region try the silver nozzle, which is the brightest one, first.

It makes the set much more spicy.

It is more noticeable in ear than what you can see in the graph, in my opinion.

 

[Klonatans]

Just received MP145, my first planar IEMs. Quick impressions.
The shells are real full metal jacket, big and heavy. Sound is quite different from DD and BA tonality, subjectively giving a more technical, drier and highly detailed presentation. Out of the box the first thing I noticed was an excess midbass that I immediately EQed (-2,5 dB at 180 Hz) as suggested by Amir. I also tried a +2,5 dB bass shelf from 70 Hz, however it immediately became apparent as being too much. Looking at the measured frequency response here, I find the LF performance doesn't correspond to what I heard as if I had a different set of IEMs. As I listen to a lot of electronic music like techno, dub and IDM with deep bass I certainly prefer subbass north of Harman-neutral, however in the case of MP145 I found the amount of subbass excessive even without EQ. Perhaps it's worth to experiment with tips and filters. I currently use the pink filters and M size Spiral Dot tips that provide a good seal. I also tried the stock balanced tips and the result was identical or very similar similar to Spiral Dots that are much easier to mount due to their wide bore.
Apart from that MP145 IEMs present an almost full size headphone like sensation I've never heard with another IEMs I have or used to have. The comfort is ok given the size of shells and nozzle. Overall a good purchase.

 

[InfiniteJester]

Apart from that MP145 IEMs present an almost full size headphone like sensation I've never heard with another IEMs I have or used to have.

I completely agree with this. This effect is so effective that I don't really use headphones anymore.

Regarding the rest, I think that the deal is not the amount of sub-bass that you can see in the frequency response, but that the bass extends far lower than any other set that I own. Something that the graphs miss:

At first, i thought that it was excessive, but now I miss that sensation in things like the Quintet, which sounds anemic in comparison for me.