www.erzetich-audio.com - Blaz Erzetic from Erzetich Audio, a hi-end headphone amplifier producer, explains what is headphone amplifier used for. There's a FREE e-book "How to Setup Your Headphone Based Audiophile System Without Going Broke" available for you on www.erzetich-audio.com/free-e-book. Here you will find this matter explained in depth.
