At the maximum volume I couldn't percieve any noise. I tested using a zero bit track (no noise perceivable) and I tested using a very low low low volume track. Let's put it this way, any noise that I might have heard could have come from outside of my headphones and not from the empeg itself. :-D I declare the noise floor of the Mark 2 undetectable at very, very, ear damaging, levels.

Calvin