Sennheiser HD 300 PROtect Headphones 100121245 Made from high density glass

Made from high density glass wool

The 266xs can operate in stereo or dual-mono modes

Headphone Level: Sets output level of the headphone amplifier

209 mm (8 in) driver with 50 mm (2 in) voice-coil

Elegant single-window work environment

Sennheiser HD 300 PROtect Headphones 100121245 Made from high density glassSennheiser HD 300 PROtect Professional ears require not only crystal clear, high resolution sound, but also protection from unexpected peak levels. Here, the Active Gard system of the HD 300 PROtect is on the case. Instead of simply clipping peaks above 110 dB, the system adjusts the overall sound down to the maximum permitted volume retaining all information and dynamics in the process. Other design elements also protect the users concentration. For