CX 300 II Precision Noise Isolating Ear-canal Phones, Black

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.

I've now owned and used these in-ear headphones for a month and I'm really happy with my purchase. I bought them because I work in an office with a single communal lunch room and I like to study while I'm having my lunch. It's so noisy you can hardly hear yourself think so I tried using a pair of Apple in-ear headphones and combined it with a white noise app that bellowed the sound of an air conditioner into my ears. It was useless as I could still clearly hear the racket around me so I tried my luck on a pair of Sennheiser CX300 II's and I'm so glad I did! These headphones are fantastic for reducing the external noise as they fit inside your ear canal using the supplied rubber fittings. Three different sizes are supplied (small, medium and large) with the medium already attached and this fits me perfectly. My wife has very small ears and the small size fits her ears well. Next, the sound quality is surprisingly brilliant for any application, a good range of base and very well balanced. If you like listening to music with lots of bass or like to listen to podcasts you'll be equally satisfied. The build quality I would say is very good too, no problems in that department and I'm very happy. 2 year warranty is supplied so I'm sure all will be well in case of a fault. It comes with a small pouch to keep your headphones in and that's a nice touch. Just to balance the review with negatives; I find my headphones are always tangled up when I take them out of the small pouch, no knots but I have to spend a minute to untangle them every use. Also the design is the right headphone lead is much long than the left, rather than both being the same length to the join. It means you could plug one ear in or loop the right lead round the back of your head. I'm not a particular fan of this design but that's a personal preference and I can see the benefits. Just to sum up - quality in-ear headphones, very comfortable to wear for extended use and amazing all-rounder sound. Can't go wrong at this price.

I bought these to replace the earphones originally supplied with my iPod. After 4 years almost daily use the original iPod earphones had gone intermittent. These Sennheiser ear-phones are very good, but I do have some caveats and reservations. Firstly it is essential to wear them as far into the ear-canal as reasonably possible. If not the bass will appear weak. To aid this Sennheiser supply three sizes of covers. Secondly with using them properly, I think some may find the bass is somewhat excessive. I got a reasonable compromise my adjusting the setting on my IPod Classic to reduce the bass. This gives a reasonable level of bass without it being too excessive. With time however I have changed my view and feel that the bass is actually very good and extended (you really can hear bass organ notes). The treble is very good - I'm hearing tape hiss from old analogue recordings that I haven't heard for years. The stereo sound stage is good, provided the earpieces are worn as intended. Sound isolation I find to be far superior to the original Apple earphones supplier with my IPod. I would hazard a guess that the isolation has been improved by at least 10dB. Listening on a bus or train or plane is certainly much more pleasurable and they certainly enable you to concentrate on the music and not the noises around. From a safety point of view, I think the level of isolation is such that it would not be safe to use these when cycling or anywhere where you need to hear traffic or similar. The original Sennheiser packaging is difficult to open - like breaking into fort knox! I used a very sharp kitchen knife - but be careful you don't cut yourself in doing so. The little wallet for storage is hidden out of sight behind the packaging. To sum up then. Recommended provided you wear the ear pieces as intended, and perhaps reduce the bass. I am certainly very pleased with mine - vast improvement over those supplied with the IPod originally.

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.

Picked these up in November, took a little time to decide on the right budsize to get a proper seal but once I did they worked great. Very clear and good quality sound with good isolation. Unfortunately yesterday the left earphone pretty much died on me. It now needs to be on max volume to be audible which isnt an option when the other side works fine (would deafen the other ear) After searching on google it seems this is a common issue, usually occuring between 6-12 months, in my case however only 1.5. Thankfully they have a 2 year warranty so this should only be a minor inconvenience. That said however they served me well and generally last longer, guess I got part of an unlucky batch. Edit: Managed to get a replacement pair from Amazon, all working fine again. These things are great while they work, good sound for the price (though im no audiophile so I have no idea how they compare) and the isolation is great. Hopefully this pair lasts longer however.

first a bit of background: i do sound enjineering, i work on a sound desk alot. and sound quality really really matters to me. obviouly i use expensive studio grade cans when working on the sound desk. i brought these as a mobile pair of earphones to listen to general music. and these querky little buds have stepped up to the plate with all the £70 earphones out there! ... i absolutly love this product. i have this thing for sennheiser products because they give you GREAT sound, great looks, outstanding comfort at a resonable price. the levels are good although it can sound abit "tinny" if you have the fitting wrong so just wiggle it abit to get a snug fit. it is really comfortable to wear and i fiddled about with the sizes of earbuds and found the meduim perfect for my ears. Obviously this might not apply to other people. the strength of the product is amazing it has been crushed in my bag so many times and it hasent been damaged at all. it is very solidly built and i dont see it breaking anytime soon. i have had these for about 2 months now and they are still just as good as they where out of the box. Cons: if it is a cold day, the earpeices may fall out quite abit due to it not being able to get a grip in your ear, this is a stupid thing to say in a reveiw as they cant do anything about it, but it's just a warning to others. the postage was good and arrived in really good time. WELLDONE sennheiser and i'll be looking forward to buying more of your products.

I bought the Sennheiser CX 300 II Precision in Black, having spent £26 on the pair of earphones. I have previously used Sennheiser, currently owning a pair of headphones with which I am very content; the sound quality is superb. I expected the same quality and high standard from these pair of earphones but was severely disappointed... Every time I see the words "Heavy bass" or "Improved bass" I scream internally at the stupidity and naivety of everything associated with this phrase. The front of this box states an "Enhanced Bass" sound, being Sennheiser and based on my previous experience with them, I didn't think too much of this, that the bass would just be a feature that has been fine-tuned along with the rest of the parameters involved in equalization. But, no. I was wrong. The bass is clearly the driving point of these earphones and the majority of earphones currently being sold to consumers. Every bit of marketing clearly advertises a 'Heavy bass' sound in most earphones I have stumbled across and this does NOT improve the sound quality of the actual earphones at all. As for these earphones in particular, there is no clarity in the sound whatsoever. The bass gets so much in the way that it muddies everything up. Having experimented with all the different EQ settings on my iPod Touch, nothing seems to be able to rectify the horrible, horrible decisions instilled in the manufacturing of these earphones. Even the 'Bass reducer' setting is unsuccessful; the balance between the bass, mids and highs become uneven with the bass being noticeably absent as a result of this setting. As a result of the ENHANCED BASS being the focal point of these earphones, the stereo sound is greatly diminished at the expense of the boosting of the bassiness in the center of the stereo image; while you'd expect a clear sound to be distinctly emanating from the LEFT and RIGHT channels, everything is pushed towards the middle, leaving a stereo sound that is not very wide at all. SUMMARY: The "Enhanced Bass" is the most idiotic feature to be sold on a pair of earphones, Sennheiser's in particular. At the expense of this, the stereo sound is terrible; you may as well be listening to something in mono. There is no sound clarity whatsoever, everything is so dark and dampened and there is no room for music or sounds to breathe at all; no room for them to interact with each other harmoniously and subsequently flood your ears with a very reasonably balanced mix of bass, mids and highs. I have heard better sound quality from a pair of Sony earphones that have cost so much less than Sennheiser's. Unless you enjoy your bass, depending on your preferred music genres, and very narrow stereo images, do not waste your money on this.

very good quality headphones. comfy fit in earsfine for my portable cd player. great little pouch to keep in