We have currently reviewed 3 Superlux headphones. They're a fairly niche brand that specializes in budget headphones with well-balanced sound quality, especially for their price range.
Overall, Superlux makes affordable and great sounding headphones. They have a surprisingly well-balanced sound compared to other headphones within their price range. Unfortunately, they're not typically versatile for all environments. They have open and semi-open designs that leak a lot and don't block any noise. They also have no noise canceling or wireless models for more convenient casual use. On the upside, they're great entry level critical listening headphones and sound as good if not better than some models worth twice or three times their price.
The best Superlux headphones that we've tested so far are the HD 681 EVO. Like the original HD 681, they deliver a great sound quality for their price range. They're also a bit more comfortable than the HD 668B. The EVO have a semi-open design, but their ear cups create a bit more bass and are slightly more isolating. It also makes them look a little more premium than the others. Unfortunately, they're just as cheaply built. They're very plasticky and won't be the most durable headphones, but their sound quality is well worth the investment.
Superlux makes affordable critical listening headphones with a surprising amount of audio fidelity for their price. Their headphones mostly fall into the critical listening category so they won't have any versatile, noise canceling, wireless headsets that you can use in all environments and on busy commutes. They're also not the most durable headphones since they have budget price tags. On the upside, they're some of the best sounding headphones within their price range and can even compete with headphones from more known brands like Sennheiser and or AKG just won't be as well built or as comfortable.
Check our recommendations for the best headphones for critical listening.