Monoprice

Monoprice 138371 Quartet Wired In-Ear Monitor Aluminum Housing

Name: Monoprice 138371 Quartet Wired In-Ear Monitor Aluminum Housing
Brand: Monoprice
SKU: 138371

20Hz-40khz

Experience Superior Sound with Monoprice Quartet Wired In-Ear MonitorsThe Monoprice Quartet Wired In-Ear Monitors offer unparalleled audio fidelity with their innovative quad-driver design. Featuring two balanced armatures and two dynamic drivers in each earpiece, these monitors deliver exception...

$45.20*

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*Price sourced from Amazon.com. Last updated:Sep 05, 2026.Price and availability are subject to change — details.

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Overview

Experience Superior Sound with Monoprice Quartet Wired In-Ear Monitors

The Monoprice Quartet Wired In-Ear Monitors offer unparalleled audio fidelity with their innovative quad-driver design. Featuring two balanced armatures and two dynamic drivers in each earpiece, these monitors deliver exceptional clarity, deep bass, and a smooth midrange. The lightweight aluminum housing and detachable cable ensure comfort and durability, making them perfect for audiophiles and music enthusiasts.

Specifications:

Drivers: 2 Balanced Armature, 2 Dynamic
Housing Material: Aluminum
Cable: Detachable, Braided Design
Frequency Response: 20Hz-40kHz

Key Features

Four drivers: outstanding clarity. Intricate detail. Two balanced armatures and a two separate dynamic drivers deliver outstanding audio performance with huge dynamics and crystal clear sound

Aluminum housing: The in-ear monitor Housing is made of lightweight aluminum and has been designed to fit snugly in your ear and be comfortable for long listening sessions. The housing is both ergonomic and engineered for premium acoustic performance

Detachable Cable: the earphone cable features a braided design and utilizes low impedance 4 core copper wire to minimize signal loss. The cable features a Memory hook to fit the shape around your ear so it fits comfortably and won't fall off while working out

In the box: Quad earphones, 3 sets of ear tips, headphone pouch

20Hz-40khz frequency response

Specifications

Driver Configuration

Two balanced armatures, two dynamic drivers

Housing Material

Lightweight aluminum

Frequency Response

20Hz-40kHz

Cable Type

Detachable braided low impedance 4 core copper wire

Included Accessories

3 sets of ear tips, headphone pouch

Frequently Asked Questions

How many drivers are in the Monoprice 138371 Quartet In-Ear Monitors?

These in-ear monitors feature four drivers, consisting of two balanced armatures and two separate dynamic drivers.

What material is the housing made of?

The housing of the Monoprice Quartet In-Ear Monitors is constructed from lightweight aluminum.

What is the frequency response range of these earphones?

These earphones offer a frequency response range of 20Hz to 40kHz.

Is the cable on these earphones detachable?

Yes, the earphone cable is detachable and features a braided design with low impedance 4 core copper wire.

What accessories are included in the box with the earphones?

The box includes the quad earphones, three sets of ear tips, and a headphone pouch.

Strengths & Trade-offs

👍 Pros

Features four drivers, including two balanced armatures and two dynamic drivers, for detailed and clear audio.
The aluminum housing is designed to be lightweight and fit snugly for comfortable, long listening sessions.
Offers a wide 20Hz-40kHz frequency response, capturing a broad range of audio details.
Equipped with a detachable braided cable that uses low impedance 4 core copper wire to minimize signal loss.
The cable includes a memory hook design to ensure a secure and comfortable fit around the ear.
Comes with a headphone pouch and three sets of ear tips, providing immediate usability and storage.

👎 Cons

As wired earphones, they lack the convenience and freedom of movement offered by wireless alternatives.
The detailed sound provided by the four drivers may highlight imperfections in lower quality audio files.
The aluminum housing, while lightweight, may be prone to showing scratches or dings over time with heavy use.
While ergonomic, the snug in-ear fit might not be comfortable for all users, particularly during extended wear.
The memory hook feature of the cable is designed to fit around the ear, which might require adjustment for some users.