" 2 watts key into an amp will not have a cleaner sound unless you turn the mike gain way back on the radio and then whats the point? "
My Delta has the non volted version of the NPC mod, it's loud, clean on the scope, and gets exellent reports on the air. My dead key range is 1.75 - 7 on the variable. I have run it into over a dozen amplifiers and always get flowers. Now, you are right, some radio's when backed way down the audio does suffer.