Killer B"Killer B" headphones are the result of one treasure hunter wanting to provide other treasure hunters with a high quality product at a reasonable price. We did not reinvent the wheel and we are not trying to sell some new gadget. All we have done is blend a very high quality set of industrial earmuffs, sensitive elements, wire, and electrical components into a great set of phones. No magic, no hype. Killer B's will deliver crisp audio with volume to spare.