I have yet to burn up a set...I bought my "Kicker 500" back in 2012 used off ebay, and it had weak tubes in it when I bought it...So I replaced them...
depending on just how cold were talking, some electronics just slow down when it gets below freezing...a small space heater would probably solve the...
Local is about all they are good for...When It comes to DX, a 4 pill will get you just as many contacts as a 24 pill....Been there, done that...I ran...