---
product_id: 65124045
title: "CX 300 II Precision Noise Isolating Ear-canal Phones, Black"
brand: "sennheiser"
price: "235 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Sennheiser"
url: https://www.desertcart.ro/products/65124045-cx-300-ii-precision-noise-isolating-ear-canal-phones-black
store_origin: RO
region: Romania
---

# Bass-driven stereo sound High passive noise isolation Customizable ear-tip fit CX 300 II Precision Noise Isolating Ear-canal Phones, Black

**Brand:** sennheiser
**Price:** 235 Lei
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your sound game—because your ears deserve the best.

## Quick Answers

- **What is this?** CX 300 II Precision Noise Isolating Ear-canal Phones, Black by sennheiser
- **How much does it cost?** 235 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/65124045-cx-300-ii-precision-noise-isolating-ear-canal-phones-black)

## Best For

- sennheiser enthusiasts

## Why This Product

- Trusted sennheiser brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Portable:** Lightweight 4g design with a sleek carry pouch for on-the-go convenience.
- • **Universal Compatibility:** Seamlessly pairs with all your favorite devices—MP3, iPhone, gaming, and more.
- • **Tailored Noise Isolation:** Personalized ear tips block ambient noise for focused listening.
- • **Immersive Bass-Driven Audio:** Experience rich, dynamic sound that elevates every playlist.
- • **Tangle-Free Asymmetrical Cable:** Stay hassle-free on the move with smart cable design.

## Overview

The Sennheiser CX 300 II are precision-engineered in-ear headphones delivering powerful bass-driven stereo sound with exceptional clarity. Featuring customizable ear tips for a secure, noise-isolating fit and an asymmetrical tangle-resistant cable, these lightweight 4g earphones come with a convenient carry pouch. Compatible with a wide range of devices, they offer professional-grade audio quality in a minimalist, portable design—perfect for daily commuters and audiophiles seeking premium sound without wireless fuss.

## Description

From the manufacturer Sennheiser CX 300 II Overview Offering a powerful, bass-driven stereo sound with greater clarity and improved dynamics are the CX 300-II Precision Black ear-canal phones. The various sizes of ear adapters (S/M/L sizes) provided in the package allow for a personalised fit as well as a high passive attenuation of ambient noise. Also, the asymmetrical cable design ensures a high wearing comfort as you listen on the go. Features High-quality dynamic speaker systems for powerful, bass-driven stereo sound Excellent fit in the ear canals and high attenuation of ambient noise (ear adapters in different sizes included) Convenient carrying pouch included Optimised for MP3, iPod, iPhone, CD players and portable gaming systems (iPod and iPhone are trademarks of Apple Inc. registered in the U.S. and other countries) Asymmetrical cable

Review: Great sound, simple design, and still worth it - I’ve used the Sennheiser CX 300 II for a while now, and honestly, they’ve reminded me how good wired earphones can still sound. The first thing that stands out is the clarity. Music feels warm and detailed, with bass that’s full but not overdone. They’re also very comfortable. Once you find the right ear-tip size, the fit is snug and blocks out a surprising amount of outside noise. I can listen for hours without any ear fatigue. The wire is thin but flexible, which helps with comfort and portability. It can tangle if you’re careless, and it doesn’t feel as durable as some newer braided cables, but mine has held up well with basic care. The asymmetrical design takes a few days to get used to, yet it’s practical once you do as it keeps the cable out of the way when you’re on the move. In terms of value for money, they’re excellent. For a fraction of the price of wireless earphones like the AirPods Pro 2, you get honest, detailed sound that doesn’t depend on batteries or software. The AirPods are obviously more convenient, with great noise cancellation and modern features, but for pure audio quality per pound spent, the CX 300 II still win easily. If you want simple, lightweight earphones that deliver genuine Sennheiser sound without breaking the bank, these are a smart buy.
Review: Perfect for years of daily use on tube and bus - Sennheiser is a top manufacturer, and these are amongst their best products. I've used assorted Sennheiser and AKG headsets/phones/buds professionally and privately since the early 1970s, and the sound with these tiny buds is as good as the best. The bass is purer and smoother than many hi-fi loudspeakers. The top is sweet and clear, often a problem with older ears, but nothing is woolly with these buds. They are also very efficient, so need a lower volume setting, and the batteries on my ear-player last significantly longer than with its original earphones. I listen to a wide range of material from jazz to pop to choral to orchestral to speech. It all sounds very natural, and I have applied almost no equalisation in the player, nor any SRS, nor any Extra Bass. With these, the original sound sounds best, stays in your ears and does not disturb even your closest neighbours on the tube. BUT, there is a definite trick to making sure the sound is good. The seal to ones ear must be air-tight, otherwise bass is lost and extraneous noise leaks in. How then? Lubricate them! Moisten the ear canal, and also the soft rubber adapter, to allow it to slide in easily and find the best fit. Also, don't push it in too far as this might bottom the adapter on the curve of the ear canal and block the sound outlet. As Ronnie Barker might have said, you may need to jer-jer-jer-jiggle it a bit. Most ears do not have a circular canal, more often it is almost triangular, so it is a miracle these buds fit so well in so many different ears. Try each of the three different sizes for the best moist fit! I don't go jogging with them, but I do walk a lot, as well as use public transport every day, and the movement rubbing on the leads could be a problem. But by stowing the long lead around the back of the neck and using an inner pocket for the ear-player and any surplus lead, the unwanted noises are reduced to an acceptable minimum. And of course when sitting still there is no problem at all. I was wondering how durable they might be when I bought my first set of the original CX300 ear buds seven years ago, and I have been careful to avoid knots with stowing the lead when not in use; one pocket is dedicated to the ear-player and buds. The cords are reasonably tangle resistant, but a determined vandal could wreck them quite quickly. For all that time in daily use over maybe seventy thousand miles my old set continued to sound as good as new, with no signs of deterioration in the rubbers or the leads, so when eventually the left bud went open circuit at the join to the voice coil it owed me nothing. I was very happy to buy this new set as a replacement, and it has proved to be every bit as good, still with the clean full range sound. These CX300-II deserve the highest recommendation.

## Features

- Easy upgrade from standard ear-buds; for those who crave great sound in a compact, portable package
- High-quality dynamic speaker systems for bass-driven stereo sound and durability
- Personalised fit in the ear canals to function as an earplug and high-quality speaker
- Convenient carry pouch included for safe and storage and transport
- Asymmetrical cable reduces tangle and cable clutter

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001EZYMF4 |
| Age range (description) | Adult |
| Best Sellers Rank | 166 in In-Ear Headphones |
| Cable feature | Tangle Free |
| Compatible devices | Most devices with 3. |
| Control method | Remote |
| Control type | Remote Control |
| Guaranteed software updates until | unknown |
| Included components | Cable, Eartip |
| Item model number | CX300-II |
| Item weight | 4 Grams |
| Language | English |
| Manufacturer | Sennheiser |
| Material | Plastic |
| Number of items | 1 |
| Package type | Standard Packaging |
| Product Dimensions | 10 x 10 x 10 cm; 4 g |
| Recommended uses for product | Music Listening, Travel |
| Specific uses for product | Recording, Noise Cancelling, Not for Swimming |
| Style | Minimalist |
| Unit count | 1 None |
| Water resistance level | Not Water Resistant |
| Wireless communication technology | Sans-fil |

## Product Details

- **Brand:** Sennheiser
- **Colour:** Black
- **Connectivity technology:** Wired
- **Ear placement:** In Ear
- **Form factor:** In Ear
- **Headphone jack:** 3.5 mm Jack
- **Impedance:** 16 Ohms
- **Model name:** CX 300 II Precision
- **Noise control:** Sound Isolation
- **Sensitivity:** 113 dB

## Images

![CX 300 II Precision Noise Isolating Ear-canal Phones, Black - Image 1](https://m.media-amazon.com/images/I/41iagyEBILL.jpg)

## Questions & Answers

**Q: What is the difference between Sennheiser CX 300 II and Betron RK300 ?**
A: I don't know the Betron, but I own both the SoundMAGIC ES20 and E10 and they are better built than the Sennheiser.  SoundMAGIC cabling is really well made and the earphones themselves are constructed from aluminium.  The Sennheiser's feel a bit cheap and plasticy to me.

**Q: Do they come in the manufacture case as it would if I were to buy it from a store?**
A: Yes it comes in a plastic casing which is very hard to get into lol

**Q: How do you adjust the length of the wire for each individual headphone once they split off?.. The left headphone is far shorter than the right one**
A: Hey Sam, sadly you can't. The idea is that the longer wire goes behind your neck. It stops the headphones getting in the way. Hope this helps.

**Q: Do they leak noise? Being in ear I am hoping they wont. Please help!**
A: Well, if your playing your iPod on full volume without them in your ears, you'd be able to hear the music. But when worn, the sound of anything around you is about half as loud, maybe less. This means you don't have to push the volume much in order to hear NOTHING but your music, at 50% vol you can't hear anything going on around you unless in a "louder-than-usual" environment, I think at 60% ish you get more of a crisp! full sound! anything above that really isn't needed unless your hard of hearing. I've noticed more in the music I've listened to before with these phones so I'd say they keep the sound in your ear when worn, this is possibly supported more so by the fact that half as much sound gets in from the outside.I'm sure anyone who isn't an audiophile who wants best of the best would be satisfied with these earphones, they are better than anything similar for the same price, in my opinion.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great sound, simple design, and still worth it
*by S***R on 4 November 2025*

I’ve used the Sennheiser CX 300 II for a while now, and honestly, they’ve reminded me how good wired earphones can still sound. The first thing that stands out is the clarity. Music feels warm and detailed, with bass that’s full but not overdone. They’re also very comfortable. Once you find the right ear-tip size, the fit is snug and blocks out a surprising amount of outside noise. I can listen for hours without any ear fatigue. The wire is thin but flexible, which helps with comfort and portability. It can tangle if you’re careless, and it doesn’t feel as durable as some newer braided cables, but mine has held up well with basic care. The asymmetrical design takes a few days to get used to, yet it’s practical once you do as it keeps the cable out of the way when you’re on the move. In terms of value for money, they’re excellent. For a fraction of the price of wireless earphones like the AirPods Pro 2, you get honest, detailed sound that doesn’t depend on batteries or software. The AirPods are obviously more convenient, with great noise cancellation and modern features, but for pure audio quality per pound spent, the CX 300 II still win easily. If you want simple, lightweight earphones that deliver genuine Sennheiser sound without breaking the bank, these are a smart buy.

### ⭐⭐⭐⭐⭐ Perfect for years of daily use on tube and bus
*by R***S on 30 December 2014*

Sennheiser is a top manufacturer, and these are amongst their best products. I've used assorted Sennheiser and AKG headsets/phones/buds professionally and privately since the early 1970s, and the sound with these tiny buds is as good as the best. The bass is purer and smoother than many hi-fi loudspeakers. The top is sweet and clear, often a problem with older ears, but nothing is woolly with these buds. They are also very efficient, so need a lower volume setting, and the batteries on my ear-player last significantly longer than with its original earphones. I listen to a wide range of material from jazz to pop to choral to orchestral to speech. It all sounds very natural, and I have applied almost no equalisation in the player, nor any SRS, nor any Extra Bass. With these, the original sound sounds best, stays in your ears and does not disturb even your closest neighbours on the tube. BUT, there is a definite trick to making sure the sound is good. The seal to ones ear must be air-tight, otherwise bass is lost and extraneous noise leaks in. How then? Lubricate them! Moisten the ear canal, and also the soft rubber adapter, to allow it to slide in easily and find the best fit. Also, don't push it in too far as this might bottom the adapter on the curve of the ear canal and block the sound outlet. As Ronnie Barker might have said, you may need to jer-jer-jer-jiggle it a bit. Most ears do not have a circular canal, more often it is almost triangular, so it is a miracle these buds fit so well in so many different ears. Try each of the three different sizes for the best moist fit! I don't go jogging with them, but I do walk a lot, as well as use public transport every day, and the movement rubbing on the leads could be a problem. But by stowing the long lead around the back of the neck and using an inner pocket for the ear-player and any surplus lead, the unwanted noises are reduced to an acceptable minimum. And of course when sitting still there is no problem at all. I was wondering how durable they might be when I bought my first set of the original CX300 ear buds seven years ago, and I have been careful to avoid knots with stowing the lead when not in use; one pocket is dedicated to the ear-player and buds. The cords are reasonably tangle resistant, but a determined vandal could wreck them quite quickly. For all that time in daily use over maybe seventy thousand miles my old set continued to sound as good as new, with no signs of deterioration in the rubbers or the leads, so when eventually the left bud went open circuit at the join to the voice coil it owed me nothing. I was very happy to buy this new set as a replacement, and it has proved to be every bit as good, still with the clean full range sound. These CX300-II deserve the highest recommendation.

### ⭐⭐⭐⭐ Great for the price
*by V***C on 20 May 2017*

This is the third pair of these we've bought in the space of several years - one each for my partner and I, and this pair being the first time we've had to replace them. As a more affordable pair of Senneheisers, these work great. Sound is clear and high quality, although note these do boost the bass a bit, so if you're not a fan of that you will want to adjust the equaliser settings on your phone. They work great for cancelling outside noise as well - I sometimes wear them at work just to reduce the ambient noise around me, and they do an excellent job of blocking out awful political discussions in the office! There are some negatives. The asymmetrical length for the cables is supposed to enable you to wear these with the device in a pocket, and reduce tangling. In my experience, the longer side is far too long, loops awkwardly and catches on clothes and limbs and therefore tends to send a lot of *rubbing against stuff* noise up the cable, and this also makes it more prone to tangling rather than less. But overall, for a £23-£30 pair of earphones that seem to last a good 18 months or more of *heavy, continuous use* you really can't complain. We never kept them in the little bags they come with, they were often roughly handled in and out of bags and pockets, and more than once I've dropped my phone with the earbuds in my ears, resulting in the cable getting tugged out of the jack. And yet it took this long for the first pair to need replacing.

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-01-24*