I have a question about head amps. Do you have to buy a speaker like a 4x12 or something like that to go with it? Or can you just connect it into a regular combo amp?Also what do you guys think about this amp http://www.musiciansfriend.com/ex/shop/home/001101170012216099247196342941?buy&type=t&q=MARSHALL+MICRO&linenum=4&csel=0&netpid=483192 ?