3M PELTOR ComTac V has Omni-directional microphones and high fidelity speakers that are optimized to transmit voice communication and can pick up sounds with great sensitivity with an excellent signal-to-noise ratio for clear and accurate sound replication. The result is a more natural sounding headset with unmatched sound clarity. In addition to the environmental microphones, the legacy boom mic (for external radio transmissions has been replaced with the MT33. This boom greatly improves the audio transmit in various noise conditions. The main, critical improvement to the MT33 provides is its noise cancellation performance. The MT33 provides 18db in noise cancellation vs the legacy microphone, which provided 6db in noise cancellation measured at 10mm distance, normalized for 0db a 1khz. 3M has replaced the leather headband, for a modern rubberized band that is easy to remove if the user wants to convert to ARC adapters (or convert back to a headband). This headband has increased environmental resistance to heavy maritime environments. Some users are fielding new, multi-channel software defined radios. The power output, waveforms, and encryption these radios are exhibiting have caused 3M to increase the overall immunity to Radio Frequency (RF) susceptibility and Electromagnetic Interference (EMI) in its COMTAC platform. 3M has implemented shielding within the cables and around the circuitry to help ensure the headset will be immune the effects of the new radio systems. The ComTac 5 utilizes U-174 plug, and will connect directly into your existing push-to-talk radio adapter Connection.