I have read the statement 'I do not need a HF amplifier'. Some hams take pride in using 100 watts power only from their HF transceiver. Myself, I would lose many contacts when the bands are less than great condition with only 100 watts output. Using 750 watts PEP out, some contacts I make are only one S unit above the noise, but solid copy. Some contacts do not hear me even at 750 watts PEP out. Using 100 watts I would never be heard on less than great band conditions. Low power is not for me. I do not own an expensive beam antenna on HF bands and the associated tower. 40 thru 10 meters with high gain beam antennas would work like an amplifier, but a 40 or 75 meter beam is out of consideration. A tower and 20-10 meter beam with rotor would cost more than my amp and modern transceivers with DNR hear SSB very well off of a wire antenna. I cannot imagine not owning a HF amplifier. I consider 750 watts PEP the minimum reasonable power output and 1/2 legal limit power output amplifiers do perform off of a convenient 120 volt AC wall outlet (240 volts AC not required). How about yourself?