 | 7.36 in 7.87 in  | |
| Available colors | ||
| Editiorial reviews | ||
| User rating |
 Sennheiser HD 558 |  Superlux HD681 | |
|---|---|---|
| Sound output | Stereo | Stereo |
| Style | Over-Ear | Over-Ear |
| Connectivity technology | Wired | Wired |
| Headset (integrated/enclosed microphone) | no | no |
| Magnet material | Neodymium | Neodymium |
| Sennheiser HD 558 | Superlux HD681 | |
|---|---|---|
| Colour of product |
|
|
| Acoustic design | Open | Half opened |
| Attachment type | Headband | Headband |
| Body material | Plastic | Leather |
| Category | Audiophile | Audiophile |
| Sennheiser HD 558 | Superlux HD681 | |
|---|---|---|
| Weight | 9.17 oz | 9.74 oz |
| Sennheiser HD 558 | Superlux HD681 | |
|---|---|---|
| Impedance | 50.0 Ω | 32.0 Ω |
| Frequency range | 15 - 28000 | 10 - 30000 |
| Driver technology | Dynamic | Dynamic |
| Total harmonic distortion (THD) | 0.2 % | 0.25 % |
| Sennheiser HD 558 | Superlux HD681 | |
|---|---|---|
| Inputs supported | 6.35mm |
|
| Cable length | 3 | 2.5 |
| 3.5 mm/6.3 mm adapter included | yes | yes |
| Type of connector |
| 3.5mm |
| USB | no | no |
| Detachable cable | no | no |
| Sennheiser HD 558 | Superlux HD681 | |
|---|---|---|
| Battery operated | no | no |
| Pros | ||
|---|---|---|
| Cons |
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