The hearing protection headsets are the balance achieved between comfort, noise attenuation and purity of sound. The engineers at Pro-Ears, have developed a hybrid digital/Analog system found exclusively in these gold Series active hearing protectors. To further enhance the natural sound quality, gold connectors are used along with high quality amplifiers and microphones to reduce impedance. Advancements in DLSC technology for compression turn an Impulse sound wave from a gunshot into a soft, audible pop. Finely engineered circuitry with proprietary Programming has reduced attack time to 1.5 milliseconds. Adjustable gain control is provided so the industry leading sound amplification can match the shooter’s situational needs. Made in the USA Features: – The model hunters demand most – Internal gain setting preset to hear the quietest sounds at the greatest distance. Chop-side cup for clean long gun shooting – great for bow hunting – excellent for low to moderate noise level environment – Apple iPod, CD, motor sports scanner or radio compatible using a 3.5 mm mini jack. The model hunters demand most Internal gain setting preset to hear the quietest sounds at the greatest distance Chop-side cup for clean long gun shooting Military grade Dual circuit boards & gold connectors for high quality audiophile sound Automatic shut off after 4 hours of inactivity Amplifies sound more than 8x normal hearing Padded, adjustable headband, Pro Form leather super comfortable ears seals 1.5 milli-second attack time Includes 4 N size batteries and weighs only 9.3 ounces – battery life is 250 hours Has 3.5mm Input jacks for i-pod and MP3 players.