i'm new to the board so i hope to get this right .i aquired a silver kustom 200 amp with matching 3 speaker cabinet .i'm not familiar with kustom amps and need to know if the kustom k200b4 is used as a guitar amp or bass amp.the serial # is 34937 the serial# for the speaker cabinet is k 2086.also can anyone give me any idea what year this amp and cabinet was made. any input on this will be appreciated..