HAS ANYONE EVER HEARD OF THIS 1 ??????????IT ONLY HAS 1 TUBE IN IT......GE#8714 ......it has ssb switch,standby,hi-lo,& power switch....would like to get schem...for it.......thats all it has on it .no other info. on it any where....dont even know who made it ...........only.LARK in the middle of it ......any hlp.plse....thanks..........................