4.5 out of 5 StarsBased on 10 reviews

Kiwi Ears Quartet

2DD+2BA Hybrid In-Ear Monitor
Selected Options: Default
DefaultCustom Design 1 (UIEM)Custom Design 2 (UIEM)Custom Design 1 (CIEM)Custom Design 2 (CIEM)
$109.00
Pre-order

UIEM: 10-12 working days | CIEM：15-20 working days

UIEM: 10-12 working days
CIEM：15-20 working days

Shipping time estimate. Pre-order items are non-cancellable and non-refundable.

Dual 10 mm
Paired dynamic drivers supply deep
Two balanced armatures
Dedicated BA drivers add midrange clarity
Four tuning combinations
Two switches allow practical changes
Medical-grade resin shell
The molded shell is designed
1-Year Warranty7-Day ReturnsFree Shipping over $50

Switchable Four-Driver Hybrid

One hybrid platform. Four useful tuning combinations.

Quartet combines two 10 mm titanium dynamic drivers in an isobaric-style low-frequency system with two balanced armatures for the mids and highs. Two switches provide four tuning combinations, allowing the listener to adjust the sound signature.

Dual 10 mm titanium dynamics

Two balanced armatures

Four tuning combinations

Medical-grade resin shell

Kiwi Ears Quartet
Kiwi Ears Quartet
Kiwi Ears Quartet

One hybrid platform.

A bass-capable 2DD+2BA hybrid with four switchable tuning combinations for adjusting low- and upper-frequency balance.

Dual 10 mm titanium dynamics
2 x 10 mm
Two balanced armatures
01 Dual 10 mm

The paired dynamic drivers supply deep, physical bass with controlled pressure and texture.

02 Two balanced armatures

Dedicated BA drivers add midrange clarity and high-frequency articulation above the bass system.

03 Four tuning combinations

Two switches allow practical changes to bass and upper-frequency emphasis for different music and preferences.

04 Medical-grade resin shell

The molded shell is designed for ergonomic fit and durable everyday use.

Quartet starts from a full, bass-capable hybrid balance and lets the listener choose among four switch combinations for different levels of low- and upper-frequency emphasis.

Kiwi Ears Quartet
Levels matched at 1 kHz

The result is a completely balanced tone that accurately reflects the best qualities of each driver.

Bass Bass is deep, physical, and textured, driven
Mids Mids retain good body and clarity
Treble Treble is clear and adjustable in overall
Soundstage The stage is immersive and full
Imaging The hybrid system keeps positional cues organized

How It Sounds

Full hybrid bass with four ways

Quartet gives listeners meaningful control without requiring an app: two dynamic drivers provide low-end authority, two BAs preserve clarity, and two switches create four tonal combinations.

Switchable
Bass
Versatile
Two balanced armatures

Dual 10 mm titanium dynamics

Two balanced armatures

Dedicated BA drivers add midrange clarity and high-frequency articulation above the bass system.

Who it's for

Full hybrid bass with four ways

The tuning explorer

Four switch combinations let the listener compare tonal balances on the same driver platform.

SwitchesFlexibleExperimental

The bass listener

Dual 10 mm dynamics create deep physical lows that can be emphasized through the switch system.

Dual DynamicBassImpact

The genre hopper

Switchable balance helps Quartet move between bass-heavy, vocal-focused, and brighter material.

VersatileGenresAdjustable

The hybrid upgrader

A 2DD+2BA layout adds separation and tuning control beyond a basic single-driver IEM.

2DD+2BAHybridUpgrade

Harmonious Balance

The Quartet is a bass-centric IEM with a natural tonal balance. A passive low-pass network at 350Hz allows rich and thick bass, while the mids from 350-1kHz stay completely flat for neutral studio-monitor tonality with a hint of warmth in the lower mids.

PopHip-HopRockEDMVocal

Resounding Bass Performance

Powered by dual 10mm titanium diaphragm dynamic drivers with isobaric phase-synced alignment and custom BA drivers, the Quartet delivers tight, fast, deep sub-bass and crisp clean highs without shrillness.

110 dB SPL/mWSensitivity
32ohmImpedance
DrummersBassistsDaily Listening

Studio Monitor Sound with Bass Emphasis

With bass emphasis below 350Hz and neutral mids, the Quartet suits performance drummers, bass guitarists, and music enthusiasts who want quality bass with natural tonality.

2DD+2BADriver
0.78mm 2-pinConnector

First-step hi-fi listening

Kiwi Ears Quartet offers a 2DD+2BA hybrid setup for listeners moving beyond basic earphones, delivering powerful bass with a natural tonal balance.

Pop, Hip-Hop, and Rock

Rich, thick bass, flat neutral mids, and crisp clean highs give modern vocals and rhythm sections a fun, impactful, and engaging presentation.

How it compares

Technical Specifications

What's in the box

Inside the Box

Monitors

Kiwi Ears Quartet × 1 Pair

Cable

1.2 m silver-plated OFC cable × 1

Eartips

Small, Medium, Large Silicone Pairs × 8 Pairs

Extras

Wearing Diagram Card × 1

Storage

Packaging Box × 1

Warranty

1 Year Warranty Card × 1

Drivers

Configuration

2 x 10 mm titanium dynamic drivers + 2 balanced armature drivers

Dynamic Driver

2 x 10 mm titanium dynamic

Dynamic Driver Arrangement

Isobaric phase-synced dual-dynamic system

Balanced Armatures

2 x balanced armature

Acoustics

Impedance

<32 Ohm

Sensitivity

110 dB

Frequency Response

20 Hz-20 kHz

Build & Fit

Shell

Medical-grade resin

Connector

0.78 mm 2-pin

Tuning Controls

2 switches / 4 tuning combinations

Cable

Cable

1.2 m silver-plated oxygen-free copper cable

Optional / Variants

Confirm current faceplate / color and cable-termination options

How it compares

Quartet in the lineup.

Kiwi Ears Quartet Kiwi Ears Quartet4.5
Kiwi Ears Airoso Kiwi Ears Airoso4.83
Kiwi Ears Forteza Kiwi Ears Forteza4.29

Signature

["Switchable,", " Bass", "Versatile"]

["Warm", "Engaging", "Smooth"]

["V-Shaped", "Bass", "Energetic"]

Best for

["The tuning explorer"]

["The warm-sound listener"]

["The fun-sound listener"]

Standout

Dual 10 mm titanium dynamics

Custom LCP+PU dynamic driver

Dual 10 mm dynamic drivers

Price

$109.00

$129.99

$59.00

unboxing video

See it in Motion.

Verified buyers

Customer Reviews

Get the most out of it

Pairs well with

In-Ear Monitors

Kiwi Ears

KE4 II
$0.00
Reservation Card

Kiwi Ears

$1 Reservation Card For KE4 II
$1.00
In-Ear Monitors

Kiwi Ears × ふぐみかん

EMBER
$135.00
DAC/AMP

Kiwi Ears

Coda
$29.99
Eartips

Kiwi Ears

Kiwi Ears Flow Ear Tips
$9.99
Audio Cable

Kiwi Ears x B Media

Terras Headphone Cable
From $47.99

Before you buy

Product FAQ.

Quartet gives listeners meaningful control without requiring an app: two dynamic drivers provide low-end authority, two BAs preserve clarity, and two switches create four tonal combinations.
Kiwi Ears Quartet is especially well suited to the tuning explorer, the bass listener, the genre hopper, and the hybrid upgrader. It is a bass-capable 2DD+2BA hybrid with four switchable tuning combinations for adjusting low- and upper-frequency balance.
Yes. The tuning switches let players choose a fuller or clearer balance for different games, while the hybrid system maintains organized positional cues.
Quartet reaches normal levels from most clean portable sources. Its tuning switches change tonal balance, not power requirements.
Yes. It uses 0.78 mm 2-pin.
The current official package list includes 1 pair Kiwi Ears Quartet IEMs, 1.2 m silver-plated OFC cable, Ear tips, Protective case, and User documentation.
Choose the ear-tip size that seals comfortably before evaluating the tuning switches. A weak seal can reduce bass and make switch comparisons misleading.
Pair it with a clean source and the correct cable termination. Relevant Kiwi Ears options in this content set include Kiwi Ears Allegro Mini, Kiwi Ears Flex Ear Tips, and Kiwi Ears Sonicap.