Battle Royale: Comparing the HIFIMAN HE-400I Over Ear Full Size Planar Magnetic Headphones to the Superlux HD668B Dynamic Semi-Open Headphones

Trying to decide between two models? Find out what separates these two items with the full comparison review below. If you would like to see more product comparisons from the same category, click here.

Contestant number one is the HIFIMAN HE-400I Over Ear Full Size Planar Magnetic Headphones. HIFIMAN is one of the highest rated brands for open-back headphones and this product proves that. These full sized headphones are equipped with amazing-quality planar drivers that deliver a well-balanced sound of 93 dB. You can also use them with your smartphone or other portable music players. The largely sized diaphragm delivers improved treble and bass.

And now we will have a look at our second product, the Superlux HD668B Dynamic Semi-Open Headphones. Superlux HD668B are semi-open headphones so they have an accurate and balanced sound, found in most open-back headphones. They also provide the protection to the drivers found on closed back headphones. If you listen to music rich with string instruments, these headphones will reproduce the most accurate tunes. It also has authentic vocal reproduction too, so mostly any type of music would sound great with these.

More about the HIFIMAN HE-400I Over Ear Full Size Planar Magnetic Headphones

This pair is also highly comfortable to wear despite its big size. Usually, these headphones are heavy but they weigh 30% less than the average weight. Also, the pads are made from soft leather and velour.

Taking a look at the features of the Superlux HD668B Dynamic Semi-Open Headphones

It comes with two cables one which is one foot long, designed for personal use, and one that is 3 feet long - this is designed for studio mostly. You can connect both cords to get an even longer connection. As for the comfort, these headphones have a headband that has minimal contact with your head, and is, therefore, virtually weightless. They are designed to be worn comfortably for long periods of time - like re-performing ad-libs and riffs in the studio... Over and over.


HIFIMAN HE-400I Over Ear Full Size Planar Magnetic Headphones

Superlux HD668B Dynamic Semi-Open Headphones


+ Top Magnetic drivers, great bass
+ Extraordinarily Lightweight & low in price
+ Highest quality of sound

+ Two cables
+ Great for all types of music
+ Semi open & low price


 If you think its sound or comfort are the only pluses, you are forgetting its design. We found it to be one of the most stylish pair of audiophile headphones. The gloss charcoal finish on the cups shows others that you take your music seriously.

 These are a lightweight and highly comfortable set of headphones which are suited for people who have an eclectic taste in music. You can buy these once and enjoy every type of music you are in the mood for. The long cable and diverse output make them great for professionals, too.

Read our full review

You might also be interested in Music Critic's in-depth article on this topic, Top 10 Open-Back Headphones of 2021.

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