In-Ear MonitorOverreview

Hidizs MP145

Name: Hidizs MP145
Brand: Hidizs

A giant driver in a giant shell — and a treble that shifted after launch.

17 sourcesUpdated 2026-07-30

$159Typical US price

Score aggregates reviewer opinions across topics.

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The short version

What to know.

A large planar in-ear with a big, sub-bass-led low end, unusually good separation for the money, and a premium metal shell. Reviewers broadly agree on imaging, resolution, build and measured cleanliness — distortion is essentially non-existent at listening levels. They split hard on almost everything else: whether the treble is extended or safely rolled off, whether the stage is class-leading or ordinarily planar-narrow, whether the midrange is among the best at the price or noticeably pulled back, and whether shells this size are livable. Two independent rigs largely explain the tonal disputes: a roughly +10 dB shelf at 20–30 Hz that is back near level by 200 Hz, the quietest part of the whole curve sitting at 500 Hz–1 kHz, a modest ear-gain peak placed low at about 2.3 kHz, and a big 8 kHz peak wedged between a 6 kHz dip and a 12 kHz notch — so the bright camp and the dark camp are describing different octaves. The separate, better-documented dispute is that later production runs measure 1 to 4 dB softer through 6.5–9 kHz than launch units, with a different rear chamber inside; Hidizs calls that normal production tolerance.

About this product

The original aluminium MP145 — one 14.5 mm planar driver, three screw-in nozzles — in Blue, Silver, Titanium or the limited Golden Titanium edition. Not the 2026 MP145 PRO, a separate later set, and not the smaller MP143 Salt. Later production runs are a quietly revised version of this same model that measures softer in the upper treble.

Hidizs spent years making portable players and dongle DACs without quite breaking through in in-ears, and the MP145 is the set that changed that. It arrived in September 2023 on Kickstarter, two years after the 7Hz Timeless had made cheap planar IEMs a category, with an unusually large 14.5 mm diaphragm, an all-aluminium shell styled after a whale's tail, and a share of sales pledged to whale conservation.

It became a default recommendation almost immediately — and then became an argument. Some of the argument is the ordinary kind, about whether the stage is big or the treble is bright. Some of it is not: about a year in, owners noticed that newly shipped pairs did not measure like launch pairs, and the graphs bore them out.

A good fit for

Listeners who want a deep sub-bass shelf with planar speed rather than mid-bass slam.
Detail and separation seekers around $150 who will feed it a real dongle or player.
Gaming and film, where the imaging draws praise from nearly every source.
Anyone happy to fine-tune by nozzle or EQ — ASR's verdict improves markedly with a shelf and a treble lift.

Think twice if

You have small ears, or you can't return them — these are unusually large shells with a wide nozzle and sharp faceplate edges.
You want a mid-forward, vocal-first tuning; several reviewers hear male vocals set back.
You want top-octave air out of the box, without EQ or the silver nozzle.
You need guaranteed unit-to-unit consistency — later runs measurably differ from launch pairs.

The reviewer consensus

Agreement &
disagreement.

5 / 12topics divide opinion

3 Strong agreement4 Mostly agree5 Divided opinions

Common ground8

The all-aluminium shell reads as premium well above $159 — even critics say so.
Separation and instrument placement are a real strength; air between instruments is the most repeated compliment.
Resolution punches above the price: the recurring line is that a clear step up costs considerably more.
The low end is big and sub-bass-led — roughly a +10 dB shelf at 20–30 Hz on two independent rigs, back near level by 200 Hz.
Measured cleanliness is not in question: distortion is essentially non-existent at listening levels and impedance is flat.
Nobody finds the upper mids shouty, which the low, modest ear-gain peak explains.
The three screw-in nozzles make real but modest changes — silver adds treble, red takes it away.
Isolation is adequate rather than class-leading, and there is no pressure build-up.

Points of contention7

Treble: extended and sparkly, or safe and short of air — the graphs put a big 8 kHz peak between a 6 kHz dip and a 12 kHz notch, so both camps are right about different octaves.
Soundstage: one of the best at the price, or ordinarily planar-narrow with width borrowed from the scooped lower mids. The split is close to even.
Midrange: a highlight for clarity, deliberately safe, or noticeably pulled back with distant male vocals — three stances, not two.
Comfort: livable for long sessions for a minority, too large and sharp-edged for most, with owner reports of the faceplate cutting into the ear.
How much amplification it actually needs, from "considerably tasking" on a phone to easy off a mid-range dongle.
Value: a benchmark at the price for most, undercut by accessories and the mid-life retune for a real minority.
Whether later production runs are the same product: three independent measurements say the newer batch is 1–4 dB softer through 6.5–9 kHz and has a different rear chamber inside; Hidizs calls it normal tolerance.

A closer listen.

12 topics · 5 divided

Left: criticalRight: positiveTighter lines: more agreement

Choose a topic

Bass

PositiveMostly agree

Reviewer sentiment8 supporting sources

CriticalNeutralPositive

Band: opinion spread · Dot: weighted average

Widely praised, with one consistent qualifier: it is sub-bass-led rather than punchy. Reviewers agree on depth, rumble and planar speed; the dissent is about weight — several note the mid-bass returns to level fast, so slam-seekers find it light, and one finds the mid-bass the more dominant of the two.

“Quick, deep and always on point, this is great!”
NanoTechnos, Headfonia

“The MP145 have fairly dense and punchy bass, but the speed is lacking slightly due to some added damping in the balanced and bass filters.”
Kazi Mahbub Mutakabbir, Headphonesty

“The area of impact is big but it isn’t heavy or very punchy.”
Suman Sourav Meher, The Headphone List

Measured

Two independent rigs agree, normalized at 500 Hz: roughly +10 dB at 20–30 Hz, +9.4 to +10.1 at 50 Hz, +6.8 to +7.3 at 100 Hz, and only +3.2 to +3.9 by 200 Hz — a shelf that is nearly flat from 20 to 50 Hz and clears the midrange quickly. ASR measures distortion as essentially non-existent at 94 dBSPL.

vs. listeners — Both readings are right. The shelf is very large where sub-bass lives and largely gone where mid-bass punch lives, so "deep and rumbly" and "not a heavy hitter" describe the same curve.

Link to this topic

The hardware

Specifications.

Checked 2026-09-22

Design

Type: In-ear monitor
Drivers: 1 × 14.5 mm planar magnetic
Tuning: Filters · 3 options

Electrical

Impedance: 30 Ω
Frequency response: 20 Hz – 40 kHz

Connection

Cable: Detachable
Connector: 0.78 mm 2-pin
Plugs supplied: 3.5 mm, 4.4 mm balanced

Manufacturer-published figures, not measurements · from hidizs.net.

Follow the evidence

Sources 17

Read with context

Limitations & method.

As of 2026-07-30

What to keep in mind 7

A read of where the reviews land as of July 2026 — prices and the shelf around this one keep moving.
Owner star ratings skew positive, since they mostly come from people who chose to buy. The maker's own store shows 4.69 from 85 with no one- or two-star reviews at all; the Amazon listing used here sits at 4.1 from 55 and does have a negative tail.
Fit decides an unusual amount here. These are large shells with a wide nozzle, so ear size, tips and seal change both what you hear and how long you can wear them — and a lot of the disagreement above tracks that.
Later production runs measure a little softer in the upper treble than launch pairs, so a review written in 2023 may not describe the pair that arrives. The silver nozzle gets most of that energy back.
Planar in-ears reward a real source. Impressions taken off a phone and off a dongle or player often disagree for that reason alone.
Test rigs read the top two octaves quite differently, so treat the treble figures as a shape rather than a score.
Almost all of this covers the original MP145. Hidizs has since released an MP145 PRO, which is a different set and not reviewed here.

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Hidizs MP145

How the score adds up

What to know.

A good fit for

Think twice if

Agreement &
disagreement.

Common ground8

Points of contention7

A closer listen.

Bass

Measured

Mids

Measured

Treble

Measured

Tonality

Measured

Soundstage

Measured

Imaging

Detail

Measured

Dynamics

Measured

Comfort

Measured

Build

Isolation

Measured

Value

Specifications.

Design

Electrical

Connection

Sources 17

Limitations & method.

What to keep in mind 7