Superlux HD-681 EVOchat_bubble_outlineFrom real comments

Sound quality massively outperforms the price tag. Multiple commenters were surprised how good these sound for such a low cost, highlighting deep, clear bass, a spacious wide soundstage, and good instrument separation. One user specifically kept using them because of the wide stage and separation. The main sonic weakness noted was a lack of midrange presence, particularly for human vocals, which some listeners may find noticeable depending on genre.

Comfort is a consistent highlight, with room to improve further. Several reviewers called the headphones extremely comfortable even after years of use. One long-term owner suggested buying aftermarket 105mm earpads from Aliexpress to make them even better, implying the stock pads are good but not the ceiling of comfort achievable. This suggests the headphones are well suited to extended listening sessions for many head shapes, based on available feedback.

The male-to-female cable jack is a recurring reliability flaw. Multiple users flagged premature failure, with one driver dying after just one month and another after two months with no apparent cause. Both pointed to the unusual male 3.5mm plug on the left cup as the likely culprit, calling it a bad, fragile design that's difficult to replace compared to a standard female jack. A four-year owner also eventually experienced a similar plug-related failure, though found the headphones still worth it overall.