Peltor SportTac Electronic Ear Defenders. The unique digital sound circuit eliminates the sharp sound clip that is typical for most active-volume hearing protectors on the market. Many people find that sound unpleasant and disturbing. The new electronics in the Peltor SportTac react instantaneously, protecting your hearing from loud impulse noises. But it does so softly, so that you rarely even hear the clip as the protection is activated. Just like Peltor’s other active-volume hearing protectors, the SportTac also enhances your hearing, so you actually hear better with the hearing protector than without it.