Flat response refers to a loudspeakers ability to not have large deviations in sound output-usually no more than 3db.-as is goes across the frequency range. The flatter the response the more true to the recording the speaker will be. The unfortunate trend today is that many companies will deliberately design a loudspeaker with a "boosted" response at certain frequencies to make them "jump out" at the customer on the sales floor. While this trick might impress at first listen, it normally becomes very irritating to the customer over time and they will soon be on the hunt for new speakers. AAD is not interested in such market driven tactics and this is something we will never do.