Also besides cutting a system's maximum available total power in half, such that a 100w/ch amp would seem to behave to the user as if they only had a 50w/ch amp on hand, a 3dB boost in the bass signal also compromises the system's optimal SNR. Usually when designing the gain structure of a multi-component system we want to run each device as "hot" as possible without over-driving the next device in the signal chain, however if there's an artificial 3dB peak in the bass due to EQ we are forced to run the average signal level 3dB lower than optimal so as to be sure to accommodate that bass peak and not distort it. That is, the 3dB peak arrives from the preamp stage going into the power amp at the exact same level it always does [just shy of creating input overload] however this means all the rest of the musical spectrum around that peak is forced to arrive 3dB lower than we'd usually like.If an intelligent EQ system such as Audyssey asks for a +3dB boost in the bass it highly taxes the main power amp such that you've effectively cut your maximum available power in watts in half. For example, a 100watt amp suddenly starts to clip on music with midbass content at the same point a 50watt amp does. Yuck.