eagle 5000 / galaxy turbo switch to turn off internal amp

hi
Need info about adding a switch to turn off the internal amplifier inside an eagle 5000/galaxy turbo.....
the radio on lowest power setting is swinging too much for the amp I am using [DK 4watts swing to 120 pep]

I know on RCI 2970 radios that a switch can be installed to turn off the 2 transistor amp ....can the same be done to the eagle 5000? so that the radio final will be the only output?

thanks
sam davisson
missouri 69