When comparing AKG K81 DJ vs Sennheiser 4.50 BTNC, the Slant community recommends AKG K81 DJ for most people. In the question“What are the best headphones?” AKG K81 DJ is ranked 65th while Sennheiser 4.50 BTNC is ranked 68th. The most important reason people chose AKG K81 DJ is:
Despite the compact size. the bass is full, has great impact, deep extension yet is not loose. The low end also has a natural quality to it that makes these headphones great for music that is performed using real instruments. The mids are slightly recessed, but also have a natural tone. The highs are the most recessed or rolled-off, but the detail and airiness of the music is not totally absent. This quality helps give the sound a smooth and pleasing tonality.
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Pro Full bass with adequate levels of mids and highs
Despite the compact size. the bass is full, has great impact, deep extension yet is not loose. The low end also has a natural quality to it that makes these headphones great for music that is performed using real instruments.
The mids are slightly recessed, but also have a natural tone. The highs are the most recessed or rolled-off, but the detail and airiness of the music is not totally absent. This quality helps give the sound a smooth and pleasing tonality.
Pro Ear cups can swivel facing outwards
The K81 can be used “DJ style”, wherein only one ear cup is in contact with the head. The cups have a smooth swivel action so they can be rotated to face outwards. A user can choose to hold one ear cup up to his or her ear while flipping switches or turning knobs on the mix board with the other hand.
Pro Easy to travel with
While these are already quite compact, the ear cups can be folded into the headband to reduce their size even further. This makes them easy to stuff inside a bag and travel with.
Pro Comfortable to wear even with extended use
The clamping force is not too much at all, so acceptable levels of pressure will be applied on the ears. Also, the ear pads are thick with ample pleather padding on the surface. This combination provides adequate cushioning between the ear cups and sides of the head.
Pro Can fit a wide range of head sizes
The aluminum headband itself has some good flex. Combined with the sliding mechanism of the ear cups, K81 can be adjusted to fit a wide range of head sizes. Also notable are the numbered steps on each side of the headband, which allow for accurate and consistent ear cup positioning.
Pro Feels high quality
Although it's mostly made of plastic, the materials don't feel cheap at all. Aside from feeling sturdy, the plastics have a smooth rubber coating which makes them feel premium to the touch. Also, the headband is made out of aluminum which is significantly more durable than an all plastic one.
Pro Great mids and bass
The mids of the 4.50 BTNC sounds natural and clear. Music with a lot of vocals and guitars will definitely sound great with these headphones. The bass is not very powerful, but still provides a satisfying thump to the music. Overall, these headphones sound warm and laid back, great for casual music listening.
Pro Good battery life
The headphones can last around 19 hours from a full charge on wireless mode with noise cancelling on. When on wired mode, it can last 25 hours with noise cancelling which is pretty decent for its class.
Pro Can fold to a compact size
These headphones can easily fit inside a bag or purse, and should be easy to carry. The ear cups can fold up to the headband, reducing the headphones’ overall size.
Pro Decent noise cancelling
The active noise cancelling feature can reduce a good amount of ambient noise that may mix in with your music, though it doesn’t completely eliminate both high and low-pitched noise if they're loud enough.
Con On-ear design can still be uncomfortable
While the ear pads are thick and give a lot of cushioning, some may still find this to be uncomfortable. Being on-ear, some pressure is applied onto the ears.Those who are sensitive to this may still feel some discomfort, especially when worn for several hours straight.
Con Highs may sound too recessed
People who prefer their music with sparkly highs and utmost clarity likely won't find these headphones to be a good listen.
Con Lengthy cable can be a hassle
The cable is 2.5m which is fairly long. Since it is not detachable and the cable tends to tangle quite easily, it may cause some problems with regular home use or when taking these headphones on the go.
Con Muddy treble
You may find the sound to be too laid back or lacking in detail. The high frequencies are slightly rolled off, so these may not be the best option if you love to hear the fine details of your music.
Con Strong clamping force
You may feel some discomfort on your head when wearing these headphones for extended periods. The clamping force is quite strong, and may give a pinching sensation on your head.