Sennheiser CX 300S

$49.99 Price Tier: Budget

3 Critic Reviews

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Page last updated Jun 23, 2026

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We compare 600+ stores and found this item at 1 store. Prices updated June 11, 2026.

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4.2 (6933)

$49.99

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Average Price: $50

Budget/Beginner

$100

$301+

Price Tier

In the Headphones & In-Ear Monitors category, Sennheiser CX 300S is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

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Price History

Based on price data from 1 merchant for "Sennheiser CX 300S". Prices shown reflect NEW condition. Tracking began Apr 3, 2026.

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Description

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Elevate your listening experience with the Sennheiser CX 300S, a pair of in-ear monitors (IEMs) designed for musicians and audiophiles alike. These earphones are engineered with Sennheiser’s transducer technology, delivering crystal-clear sound reproduction and a robust bass response that brings your music to life. Whether you're on stage or simply enjoying your favorite tracks, the CX 300S ensures that every note and beat is delivered with precision.

The ergonomic in-ear design minimizes ambient noise, allowing you to focus on the intricate details of your sound. With four sizes of ear-adapters (XS, S, M, L) included, you can find the perfect fit for maximum comfort and noise isolation. The CX 300S also features a smart remote, enabling you to seamlessly pause your music and answer calls with a simple touch, compatible across all devices.

Key Features:

Sennheiser transducer technology for detailed sound and enhanced bass
In-ear design for reduced ambient noise
Includes four sizes of ear-adapters (XS, S, M, L) for a personalized fit
Smart remote for music control and call management
Compatible with all devices

Product specs

Type	Over ear
Operating principle	Dynamic
Frequency response	117 Hz - 21 kHz
SPL	118 dB
Noise cancelling	No
Primary application	Everyday listening
Built-in mic	Yes
Cable type	Attached
Cable Length	1.2 m
Connector	3.5 mm w/ 1/4"
Weight	12 g

FAQs

Does the Sennheiser CX 300S have a built-in microphone?: Yes, the Sennheiser CX 300S features a built-in microphone integrated into the cable, allowing for hands-free calls and easy music control.
How does the Sennheiser CX 300S isolate ambient noise?: The Sennheiser CX 300S has an ergonomic in-ear design that provides passive ambient noise isolation, enhancing your listening experience by minimizing external sounds.
Is the cable of the Sennheiser CX 300S detachable?: No, the Sennheiser CX 300S comes with an attached cable that is designed to be tough and tangle-free for durability and ease of use.
What type of connector does the Sennheiser CX 300S use?: The Sennheiser CX 300S uses a 3.5 mm connector, making it compatible with most devices that have a standard headphone jack.
Are the Sennheiser CX 300S suitable for everyday listening?: Yes, the Sennheiser CX 300S are designed for everyday listening, providing a comfortable fit and clear sound quality for daily use.
What is the frequency response range of the Sennheiser CX 300S?: The Sennheiser CX 300S has a frequency response range of 117 Hz to 21 kHz, ensuring a wide range of sound reproduction for various types of audio content.

Videos

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Bruce Chastain Reviews

Sennheiser CX 300S quick review

Bruce Chastain Reviews

Sennheiser CX 300S In-Ear-Kopfhörer || Im Test (Praxistest) - Gut und günstig?

Pascals Tech Check

Sennheiser CX 300S In-Ear-Kopfhörer || Unboxing & Review

Pascals Tech Check

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Sennheiser CX 300S.

Comparisons

0 0

The Final E3000 is considered slightly more expensive but offers superior sound quality with clearer vocals and better sound stage than the Sennheiser CX 300S.
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User experience

0 0

Users appreciate the E3000 for its crystal clear vocal reproduction, making it a preferred choice for those not seeking heavy bass.
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0 0

Owners of the CX 300S report longevity with proper care, lasting over 3 years despite reported build quality issues in other units.
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Features and functionality

0 0

The Final E series requires more power, potentially necessitating a dongle for optimal volume when used with phone headphone jacks.
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Critic Reviews

Sennheiser CX 300S Review - Major HiFi

majorhifi.com

Sennheiser's CX 300S earphones deliver surprising audio quality for just shy of $50. While light on accessories, their build quality promises durability reminiscent of higher-end models. The sound profile is balanced, with a lively bass, clear mids, and detailed highs that rarely become harsh. Though they lack certain premium specs, the ergonomic design ensures comfort for extended listening. Ideal for those needing robust daily earphones, the CX 300S competes well in its price range. If seeking more bass or treble, consider the pricier Final Audio E3000C. Overall, the CX 300S stands out for value and performance.

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Sennheiser CX 300S Review - Headphone Dungeon

headphonedungeon.com

The Sennheiser CX 300S earphones deliver a reliable, balanced sound with a pronounced bass that's neither overwhelming nor underwhelming, making them versatile across genres. Their ergonomic fit provides excellent sound isolation, while the build is functional but lacks aesthetic appeal, with a somewhat cheap-looking plastic design. The inclusion of a mic and remote adds convenience, though some might find the overall sound lacking the charisma of higher-end Sennheiser models. For $50, they provide decent detail and a spacious soundstage, making them a solid choice for budget-conscious listeners seeking quality without frills. However, the design might not impress those looking for premium aesthetics. Overall, a decent pick for the price, but not a standout in the Sennheiser lineup.

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Product review: Sennheiser CX300S In Ear Headphones - Richer Sounds Blog | Richer Sounds Blog

richersounds.com

Sennheiser's CX300S in-ear headphones stand out in a sea of wireless options with their impressive build and sound quality. These wired wonders offer a premium feel, from their robust casing to the tangle-free cable with an in-line mic and remote. They provide a significant upgrade from typical freebies, delivering clear vocals and impressive rhythm and timing. The bass is deep yet balanced, ensuring a rich listening experience without overpowering the sound. While not for bass-heads seeking earth-shaking lows, they offer excellent value for those seeking an affordable yet substantial audio upgrade.

positive

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