Skip to content
HearWiki
CrinEar Project MonolithImage © CrinEar

CrinEar Project Monolith

76/ 100
Great
HearWiki score
Price n/a
typical price, USD
Sold new
Manufacturer pageBuy now onAmazon

At a glance

Brand
CrinEar
Type
Wired IEMs
Fit
-
Connection
Wired
Noise cancelling
No
Released
2026

Score breakdowngreat overall

Sound8.0
Value6.0

The Project Monolith is a limited-edition dual dynamic driver IEM with a monolithic brass shell plated in 18K gold, featuring a bass-forward tuning and the debut of CrinEar's MDM acoustic platform. It is limited to 999 units worldwide.

The HearWiki takeAI-condensed

This wired in-ear monitor showcases a bass-forward tuning with impactful low-end punch while keeping vocals and treble realistic, making it a niche choice for bass lovers rather than a universal pick. Its engineering stands out through a brass build and custom dual drivers, but with only 999 units made, finding one means scouring the secondhand market.

What works

  • Deep, powerful bass response
  • Natural mids and highs despite bass focus
  • Innovative brass shell construction
  • Custom co-developed dual driver setup
  • Lightweight at just 16 grams

What doesn't

  • Bass-heavy tuning not for everyone
  • Very limited production run
  • Only available used due to 2026 release
  • Requires balanced 4.4mm source for full performance

Paraphrased from published reviews & specs - not an original hands-on test. Our AI disclosure.

Specifications

Audio - CrinEar Project Monolith
Driver2-driver hybrid
Driver typehybrid
Drivers per side2
Frequency response2 Hz - 38 kHz
Sound signaturebass-heavy
Impedance14 Ω
Sensitivity98 dB/mW

What the reviews said

2 source(s) feeding this product's score.

headphones.com

53

The reviewer dislikes the Monolith's extreme bass-heavy tuning, finding it suffocating and lacking clarity, but acknowledges it may appeal to dedicated bassheads; it scores 4.5 for sound quality and 5.3 overall due to excellent comfort.

Read the full review

note.com

The reviewer praises the Project Monolith as a successful technology demonstrator that delivers deep, punchy bass while maintaining natural mids and highs, though it is clearly a niche, bass-focused product not for everyone. They highlight the innovative MDM brass construction and co-developed drivers as impressive engineering, and note the limited 999-unit run means it is only available on the used market.

Read the full review

What YouTube reviewers say

Video reviews we found, each condensed to its verdict. They do feed the HearWiki score, at a measured weight below what a published written review carries.

21:20

in-Ear Fetish Review \\ CrinEar Project Monolith IEM

in-Ear Fetish4.4K viewsJul 2026

The reviewer finds the CrinEar Project Monolith to be a well-executed IEM with a unique brass construction that uses the shell itself as the acoustic chamber. It delivers a solid, full-bodied sound with a tasteful bass boost that doesn't overwhelm, though it's not for bassheads. The main drawbacks are the very thick cable and the heavy, dense build, but overall it's a good value at $400.

PositiveWatch on YouTube

Summaries are AI condensations of each video's own conclusion, not transcripts. Titles, thumbnails and view counts belong to their channels.

Own these? Rate them.

A minute of your experience with the CrinEar Project Monolith helps the next person shopping for them.

Alternatives worth a look

Other wired iems models at a comparable price, ordered by HearWiki score.

86
Wired IEMs
CrinEar Reference
$350Sold new
84
Wired IEMs
CrinEar Daybreak
$170Sold new
84
Wired IEMs
THIEAUDIO Monarch MKIV
$1,150Sold new
83
Wired IEMs
Letshuoer S12 Ultra
$170Sold new
82
Wired IEMs
TRUTHEAR GATE
$22Still sold new
82
Wired IEMs
Kiwi Ears Astral
$300Sold new
81
Wired IEMs
Kiwi Ears KE4
$200Discontinued
81
Wired IEMs
Ziigaat Horizon
$330Sold new

More from CrinEar

Other CrinEar models in the database, same category first.

Where it sits in our rankings

The data-driven guides this model qualifies for.