I hear a lot of people commenting on how low the Total harmonic distortion is on their amplifier, sometimes .001 % or lower! We all know that distortion is bad, so its definatly a good thing to have such low distortion percentages right? Of course. Unfortunatly not many people realize how hard .001% distortion is to hear. Something people should realize when buying a new amplifier is that the THD percentage does not matter!!! Any modern amplifier has less than audible distortion, unless of course you are driving it beyond its linear operating range! Now before all the audiophiles come and get me saying all amplifiers sound the same think about what I am saying. No one can hear 1% distortion in music, sorry. If you can, you have VERY VERY VERY good hearing, but I have never heard of anyone being able to do such a feat. BUT, with test tones, the story is much different. You can clearly hear at the 5 second mark where the 1% distortion kicks in. I unfortunatly do not have the order of distortion available, as I am shamelessly stealling the sound file from the eatel.com car audio page. Also note, that the SPEAKERS are the main culprit of distortion in the system. Only the most terrible amplifiers EVER would have more distortion than a loudspeaker. 2khz tone with 1% and 5% distortion added Here is the link to the page I stole the sound file from: http://www.eatel.net/~amptech/elecdisc/caraudio.htm Check it out if you want more info on distortion, or car audio in general.