3.8Noise control & calls9.2
Why is SoundForm Surround better than H9?
SoundForm Surround has no measurable advantages in this pair.
Why is H9 better than SoundForm Surround?
- Active noise cancellingNo · SoundForm Surround: Yes
- Battery life60 h vs 75 h+25%
Specifications
Side by side
| Sound | ||
| Fit | Over-ear | Over-ear |
| Driver type | — | Dynamic |
| Driver size | — | 40 mm |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 20,000 Hz |
| Noise control | ||
| Active noise cancelling | No | Yes |
| Battery & charging | ||
| Battery life | 60 h | 75 h |
| Battery life with ANC | — | 45 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5.4 |
| Bluetooth codecs | — | AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | No |
| aptX | — | No |
| LDAC | — | No |
| Multipoint (two devices) | Yes | — |
| USB-C | Yes | Yes |
| 3.5 mm jack / AUX | Yes | Yes |
| Features | ||
| Hands-free calls | Yes | — |
