When comparing Superlux HD 681 vs Sennheiser 4.50 BTNC, the Slant community recommends Superlux HD 681 for most people. In the question“What are the best headphones?” Superlux HD 681 is ranked 36th while Sennheiser 4.50 BTNC is ranked 67th. The most important reason people chose Superlux HD 681 is:
These headphones have what is called a V-shaped sound signature where the bass and treble is boosted while the mids take a backseat. The bass is powerful, deep and satisfying. Listening to bass heavy music will certainly be a good experience. The boosted treble makes audio detail up front, so nuances in the music can be clearly heard.
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Pro Bass and treble are emphasized
Pro Fairly wide soundstage
Due to the semi-open design, the sound is not completely trapped inside the ear cup housing. This gives the sound a wider, more natural feel.
Pro Not tiring to wear
The HD681 will not put a lot of strain to your neck and head, even for long periods. Coming in at around 220 g, they are relatively light. This is due to the use of plastic as the primary build material, along with small metal tubes on the headband frame instead of large plastic or metal parts.
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 Thin ear pads may cause comfort issues
The ear pads are made of cheap feeling synthetic leather which can get warm rather quickly. To potentially add more discomfort, the cushioning inside these ear pads is quite thin, and can hurt the area around your ears when worn for many hours straight.
Con May feel cheap and flimsy
The plastics used in the construction of these headphones are not of the best quality. They feel flimsy and will often flex and rattle.
Con Mids can be lacking
Some may find the mids to be inadequate. Vocals, guitars and other sounds in the mid-frequencies may sound distant or too soft.
Con Treble can be harsh
While the bass benefits greatly from the V-shaped sound signature, the highs are boosted by quite a lot, and can make the treble sound too harsh for some. Cymbal hits for example can be too washy and near distorted and can be fatiguing.
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.