The HD 439 Around-Ear Stereo Headphones from Sennheiser provide high-quality audio in a stylish and durable design. The textured earcup design provides a cool look and long-lasting strength and durability. The headphones feature large low-impedance drivers with neodymium magnets for a powerful audio response with strong bass that's perfect for MP3 players, CD players, and other portable media devices, as well as home hi-fi systems.
The closed-back design and around-ear breathable plush cushions provide natural ambient noise reduction and long-lasting comfort. The padded headband is adjustable to snugly fit virtually any head size. There are 2 exchangeable single-sided cables, one short and one long, to provide the perfect amount of slack and minimal tangles for varying applications. Each cable has a standard 3.5mm stereo mini plug for wide compatibility with a variety of devices. A 1/4" adapter is included so you can connect to high-end audio devices.
| Type | Around-ear, closed-back, dynamic |
| Frequency Range | 17Hz - 22.5kHz |
| Impedance | 32 Ohms |
| Sensitivity | 112dB |
| Total Harmonic Distortion (THD) | < 0.1% |
| Connectors | Gold-plated 3.5mm stereo mini plug with 1/4" adapter |
| Cable Length | 1 x 10' (3 m) 1 x 4.6' (1.4 m) |
