It seems the boards to be kind of thin..
 
	btw me,newbie, making my first KGSSHV and KGSSHV mini and having seen many Kevin-designs, find that there are many circuits with LSK389.
 
	I learnt that there are LSK389 A,B,C,D. Could you tell me which one to choose or they are the same?
 
	with much thanks!