Sennheiser HMDC 27 Dual-Ear Over-Ear Broadcast Headset with Dynamic Mic and Active Noise Reduction (No Cable)The Sennheiser HMDC 27 Dual Ear Over Ear Broadcast Headset with Dynamic Microphone and Active Noise Reduction is ideal for TV and radio applications in very loud environments. The HMDC 27 features Noise Gard (active noise reduction) that actively reduces the ambient noise level by 15 dB, increasing intelligibility while protecting the users hearing and avoiding stress and fatigue due to noise. The lightweight design offers extra soft cushions and