Hidizs MP145 Review

Hidizs MP145 review featured

In this review, I’m looking at the Hidizs MP145 IEMs. The MP145 features 14.5mm ultra-large planar magnetic drivers, Hidizs Pneumatic Sound Tuning Filter and is tuned to the Harman-2019 Curve. It’s available on Kickstarter here with an early bird price of $139. The MSRP is $199.

What’s cool about these is that Hidizs has partnered with the Whale and Dolphin Conservation (WDC) to raise awareness of these creatures and the importance of the work that the WDC does. Furthermore, the MP145 design is inspired by whale tails and Rorqual Pleats.

Disclaimer: This sample was provided by Hidizs for an honest review. All observations and opinions here are my own based on my experience with the product.

Hidizs MP145 Review
The Hidizs MP145 IEM - Exceptional audio meets great value and a good cause.
Add your rating here!4 Votes
Highly resolving
Impactful, tight, controlled bass
Buttery-smooth treble
Great build quality
Helps raise awareness about the importance of Whale and Dolphin Conservation
Treble is a little subdued
Shells might be large for people with small ears
Our Score

Hidizs MP145


Driver: 14.5mm ultra-large planar magnetic driver
Frequency response: 20Hz-40kHz
Sensitivity: 104dB
Impedance: 30Ω

In the Box
  • Hidizs MP145 IEMs
  • Detachable 0.75mm 2-in SPC cable
  • 9x pairs of silicone eartips
  • Carrying pouch
  • Documentation


Inspired by the elegance of whale tails and the efficiency of rorqual pleats, the MP145 headphones boast a distinctive design. Crafted from aviation-grade aluminium through CNC carving, these headphones radiate durability and exhibit impeccable build quality. This marriage of aesthetics and sturdiness is a testament to the precision behind their creation.

Inside the MP145, symmetrical 14.5mm ultra-large planar magnetic drivers reign supreme, featuring a fully symmetrical magnetic circuit. These drivers generate a magnetic flux nearing 1 Tesla at the magnetic gap, ensuring an audio experience marked by crystalline clarity and remarkably low harmonic distortion.

Sound enthusiasts will appreciate the MP145’s versatility, thanks to the inclusion of three pneumatic sound tuning filters. With these filters, you can effortlessly toggle between high-frequency, balanced, and low-frequency modes, tailoring the sound to your preferences.

Despite housing these substantial 14.5mm drivers, the headphones manage to deliver a natural and comfortable fit. Even during extended listening sessions, I didn’t feel any signs of pressure build-up or discomfort, making them a reliable companion for hours of continuous use.

The IEMs come with a high-purity silver-plated copper (SPC) cable. Available with either a single-ended 3.5mm or balanced 4.4mm termination, this cable not only looks appealing but also offers good handling with zero microphonics.

The stock SPC cable


Gear used for testing includes the Matrix Mini-i 4 + Topping L70, the Cayin RU6 and the HiBy R2 II. The MP145 is relatively easy to drive and doesn’t require a powerful source. You can run it with any dongle DAC, low-powered DAP or even straight out of a smartphone.

When listening to the Hidizs MP145, the first thing I noticed was its organic sound. It exudes a blend of accuracy and clarity while maintaining a sense of effortlessness. The MP145 captures the essence of the original recording, encompassing it within a balanced sound signature.

One standout feature that caught my attention is the MP145’s extended frequency response. It demonstrates finesse in reproducing both high and low frequencies with precision. Furthermore, its ability to handle higher volume levels without introducing distortion adds to the allure, resulting in a cleaner, more immersive experience.

The soundstage created by the MP145 is expansive, extending both in width and depth. What’s commendable is how it achieves this without relying on an overly bright treble. Instead, it crafts a sense of spaciousness and separation between instruments and vocals, largely owing to the speed of the planar drivers.

Hidizs MP145 frequency response graph
Hidizs MP145 default (gold) filters.
MP145 filters
Hidizs MP145 filters.

Picture this: a bass that walks the tightrope between precision and power with finesse. It’s the kind of bass that dances through the sonic spectrum, effortlessly navigating its depths.

This bass isn’t just deep; it’s an explorer of subterranean realms, plumbing the depths of low frequencies with unwavering accuracy. It remains true to the original recording, avoiding any ostentatious showboating. The MP145’s bass is like a seasoned conductor, ensuring every note is played with precision and control.

Yet, it doesn’t stop there. This bass carries an inherent sense of speed, capturing the subtlest nuances and transients. But it does all of this without drowning out the other elements; it harmonizes with the mids and highs, orchestrating a balanced symphony.


The Hidizs MP145’s midrange is a storyteller extraordinaire, painting intricate musical narratives with each note. Vocals and instruments step onto the stage with an authenticity that’s somewhat rare at this price range.

This midrange is all about naturalness, in both tone and note size. It’s like having the artist right there, pouring their soul into every word and melody. And what’s impressive is how it harmoniously melds into the overall sound, never overpowering but always anchoring the entire musical experience. In short, the MP145’s midrange is a symphony of realism and balance.


The MP145 has a treble that’s as silky as a moonlit river, flowing with grace and poise. What sets it apart is its treble’s smoothness, devoid of any sharp edges or sibilance.

This treble is a maestro of subtlety, effortlessly gliding through the high frequencies with a gentle touch. The absence of sharpness or sibilance ensures that even the most intricate musical details are unveiled without a hint of harshness. It’s a treble that complements the midrange and bass, resulting in a cohesive presentation.


MP145 vs MTPro
Hidizs MP145 (red) vs BASN MTPro (black).

The BASN MTPro (review here) also has a 14.5mm planar magnetic driver and alloy shells. The big difference between these two IEMs is in the bass responThe the MTPro has a fuller (some might call bloated) upper bass and lower midrange.

As a result, the MTPro sounds warmer and has more body and thicker notes. In comparison, the MP145 sounds more neutral and detailed. At the end of the day, there are not a whole lot of differences between these 2 IEMs, but the MP145 comes across as more refined and resolving (albeit not as outright fun).

The MTPros soundstage is not as expansive but it has similar depth. The MP145, in contrast, has a wider stage and increased detail retrieval.

Hidizs MP145 with storage pouch


In conclusion, the Hidizs MP145 is a good IEM, especially at the $139 early-bird price, offering high-resolution audio with a buttery smooth sound signature. Even at full price, it’s decent value. Its extended frequency response, spacious soundstage, and precise yet powerful bass make it a standout choice for audio enthusiasts.

What makes this IEM even more special is that buyers can also contribute to a great cause while enjoying exceptional sound quality. Purchasing the Hidizs MP145 allows you to make a positive impact beyond your audio experience. Overall, this IEM not only delivers outstanding performance but also provides an opportunity to support conservation efforts.

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