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 ? 7 V% k3 X/ O$ [* v+ O* l% k% j/ l 7 j* K4 R5 k7 V9 aAlso what's the difference between current model of Malata Karaoke player compare with earlier models ) ]4 W5 O, f9 E1 o' q4 P, |; [7 m2 WThanks for help.