Pro Ears Gold Series Advantage Hearing Protection is the balance achieved between comfort, noise attenuation and purity of sound. No compromises. No excuses. Real audiophiles understand that for purity of sound an analog sound system is superior to a digital sound system, however, digital systems can correct imperfections or enhance and modify sound better than analog systems. Most active hearing protectors or stereo headphones employ one technology or the other. Engineers at Pro-Ears were not willing to compromise for the sake of simplicity or cost. The result is the hybrid digital/analog system found exclusively in the Pro-Ears Hearing Protectors from Gold Series. Clear sound, clear commands, real advantage. To further enhance the natural sound quality Pro Ears uses gold connectors and high-quality amplifiers and microphones to reduce impedance. ProEars proprietary software reduces interference caused by wind while enhancing the sounds you want to hear.