Superlux HD668B
The Superlux HD668B promo shot.

Superlux HD668B Studio Headphones review – Is the price worth it?

At £35.99, the Superlux HD668B is a decent set of studio headphones in the sound department, but somewhat lacking overall. With this in mind, they are made mainly for home studio use and not everyday on-the-go music playback. Which is reflected in the design and build quality. However, if you aren’t worried about design and longevity, then these headphones may just be the perfect fit for you…

Cables in all shapes and sizes…

Included in the box is a range of useful accessories. I was happy to see two variations of cables provided – both 1m and 3 m. This is a useful addition as when connecting your headphones to a pc, sometimes the cable length can be an issue. In this case, unless your PC or laptop is on the other side of the room then 3m should do you fine. In addition to the two cable variations, a headphone bag and 3.5-inch jack adapter is included. Which is useful for connecting into a midi console, or guitar amplification unit.

Is “comfort” the right word?

Yes, the Superlux HD668B’s are somewhat comfortable, but the lack of size adjustment could be an issue for some people. On the other hand, they do stretch when placed on the head, with the foam covers providing stability during even the most headbanging tunes. For me personally they are comfortable, but for someone with a larger head, I can see the functionality of not being able to expand the earpieces to be somewhat of an issue. Also, the ear pads are somewhat thin, meaning that after a few hours of playback you can begin to feel the plastic casing behind the foam. Whilst I’ve seen on Amazon that it’s possible to get additional ear pads at an extended price, I find this to be somewhat cheeky. For me, the earpads should be comfortable for longer than a few hours, but at this price, it’s hard to complain… I guess.

Christmas cracker toy design

My opinions are very mixed on the design. Whilst it’s not necessarily “ugly”, the materials used give the impression that these headphones might be something you’d find in a Christmas cracker. The mixture of plastic and foam makes these headphones feel far from sturdy and that a slight drop might break the top headpiece.

Another strange design choice is the use of a male jack attached to the left side. Whilst I haven’t had any issues with the male connector jack yet, I can see this becoming a problem in the future. As male jacks are more prone to long-term connection issues and are easier to damage.

Surprisingly great sound, especially for studio mixing!

This is where the Superlux HD668B really comes into its own. Priced at £35.99, the points made about design and comfort are probably to be expected for a pair of sub £100 studio headphones. On the contrary, the sound does not resemble this price range. Which to me is the most important reason for purchasing headphones in the first place.

The bass is strong, yet not overpowering in the mix and doesn’t distort even at higher volumes. Mids are crisp and clear, providing great space and clarity within the mix, which is incredibly useful when mixing songs with a large variety of instruments. Whilst also providing a clearer extenuation on the vocals, especially during gentler songs. Making the lyrics easy to hear and understand. However, this could be down to the headphones diminishing the bass slightly, especially on the 808’s which is commonly heard in new age rap, and the bass sound I tend to turn to when creating my own beats.

An issue I picked up on during the testing phase was that there is a large amount of noise spill. This reinforces the fact that these headphones would best be suited for home use. As when taking them out in the public you’re sure to annoy a few people.

Headphones built for the studio

As mentioned earlier in the review these headphones aren’t intended for everyday portable use. Instead, they are much better suited for a home studio. The semi-open design allows for a large soundstage during playback, and the well-balanced lows, mids and high really allow you to hear what’s going on during the recording or mixing session, as the headphones are designed to provide a flat range during playback.


As you’d expect from a pair of headphones at this price range they have their flaws, but overall the value is immense. As the sound quality, it is definitely greater than other headphones found within this type of price range. For a consumer who finds comfort and style to be the most important feature in their set of cans then I would advise steering clear of the Superlux HD668B. But if you are more concerned with a decent listening experience, that will not break the bank, you’ve found the right pair.

  • Acoustic Design – Semi-Open
  • Frequency Response – 10Hz-30KHz
  • Sensitivity – 98
  • Maximum Power – 300
  • Impedance – 56
  • Weight – 222g

Superlux Website

For the price you pay, the comfort and build quality are what you'd expect with the HD668B. However, compared to most sub £100 headphones, the sound quality is pretty impressive.
Sound quality92
Worth it?95
Reader Rating7 Votes81
Cheap and cheerful.
Great listening experience for the price.
Clarity within the mix, which is not overpowered by heavy bass.
No distortion at high volumes.
Cheap and somewhat tacky design.
Uncomfortable for long periods of wear.
Feel like they could break easily.
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