- Type: Dynamic, Semi-open
- Driver: 50mm, dome type, neodymium magnet
- Sensitivity: 98 dB (SPL/mW)
- Frequency Range: 10 to 30,000 Hz
- Rated Impedance: 32 Ohms
The HD681 headphones feature a semi-open design intended for use in professional monitoring applications. These headphones feature premium quality audio components paired with an ergonomic design. The self-adjusting headband provides the listener with a great fit and these durable headphones can even be twisted for use in single ear monitoring.