Can someone tell me how to use this kind of stove ? Is it true that only works with metallic pots, since the top is flat, I must use flat bottom pots to get larger area of contact ? " A; l# b+ v" G% K" L. w/ v0 e - a+ ?/ @( Y( q& \; a: ^Also what's the difference between current model of Malata Karaoke player compare with earlier models 0 d1 A0 J/ |0 D. m9 X5 XThanks for help.