Sennheiser HD 424 X
The HD 424 X (also written HD424X) is a high-end dynamic headphone manufactured by the Sennheiser Corporation. Here are some of its features and specifications.
- Open-air
- Frequency Response: 16 Hz to 20 kHz
- Impedance: 2000 Ω
- Nominal SPL (DIN 45 580): 94 dB
- Mass: 180 g
- Cable length: 3 m