a lot of people have to "notch" the power on some strong channels to allow full amplification on other weak channels. you can read some information about it if you search "Notch" and user "KRO". I have a 26db preamp that I can't use full power as it will saturate the same way an audio amp will create distortion if the input signal is too strong; right now it at half power until I can find a way to reduce signals from 17 and 35.