I've been using this amp. on am only. The primary radio I use it with is a Sonar fs 2340. It dead keys at 2 1/2 watts and swings to 6. Surprisingly it's a very clean operating amp. I truly believe in junk in junk out. Any way, I don't want to put anymore than the 2 1/2 I'm putting in. I would like to know whats the failure point? How many watts can I safely put through this amp. without it frying or begining to cause channel splatter which, at this time with the 2 1/2 swinging to 6 is extremely minimal. Actually it doesn't exist as my nearest local is a ways away. He says when I transmit on my home channel, 15 he gets me on 16 as if I were running stock from a few blocks away. Granted he's also using a Sonar which has an excellent recive. So if you have used this amp or many of the same amps produced under many different names, can you tell me you exsperiance as far as max wattage through this amp. The reason for the question is I have a few radios I'd like to hook up to this amp. Thay run from 5 to 10 watts.