Why is PORTA better than HD 400U?
PORTA has no measurable advantages in this pair.
Why is HD 400U better than PORTA?
- Lowest frequency20 Hz vs 18 Hz+11%
Specifications
Side by side
| Sound | ||
| Fit | — | Over-ear |
| Ear cup design | — | Closed-back |
| Driver type | Dynamic | Dynamic |
| Lowest frequency | 20 Hz | 18 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Impedance | — | 18 Ω |
| Sensitivity | — | 120 dB |
| Noise control | ||
| Active noise cancelling | — | No |
| Battery & charging | ||
| Battery life | 8 h | — |
| Charging time | 1.5 h | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | — |
| Bluetooth codecs | AAC, SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | — |
| aptX | No | — |
| LDAC | No | — |
| USB-C | Yes | Yes |
| 3.5 mm jack / AUX | — | Yes |
| Design & build | ||
| Weight | 40 g | — |
| Protection rating | IPX4 | — |
| Water resistance (IPx) | IPx4 | — |
