Welcome to the world of audiophile. I say that because these are the real deal when you are looking for quality headphones. I am actually listening to these headphones while writing this review. Im a Dj and I use these headphones as my home set. They deliver the sound I want from any audio delivery device. These have such rich sound and bass. With the S-logic technology you cant go wrong. The sound that comes from these headphones are resounding with a full sound that can be heard through the lows. Whats really great about these headphones that they save your ears from eardrum damage. Medical research has shown magnetic field emissions to be hazardous to your health. The average magnetic field emissions of other headphones is more than four times the maximum recommended levels. By combining S-Logic and PROline technology, Ultrasone has developed a method that significantly reduces these emissions. The HFI-2000 version has reductions up to 60% making Ultrasone the worlds safest, most natural sounding headphone. They want you to listen to their products throughout your lifetime so they save your ears from damage.