I have a chance to get a Palomar Elite 300 linear amp CHEAP! Is this
thing any good? I haven't been able to find any information on it and
it doesn't come with a manual. The questions I have a

Is this amp good for HF Freqs 10 meters down to 80 meters as the seller
claims?
What purpose does the preamp serve?
With a boost in transmitting power, how will this affect receiving?
Would I be transmitting further than I can actually receive?

Sorry for the dumb questions. I have absolutely no experience with
linears, and this little amp seems too good to be true, so it probably
is!
Anyone know where there's information online for this amp?

Thanks!