Howdy , please see attached file, its a pic of a valve/ tube car headunit ! i want one or atleat want to learn more about similar head units. this may be a Fujitsu ten head unit .. but i have searched high and low for any thing on this type of head unit with my efforts resulting in zero ! do any of you have any input on this matter ? do you know of a car audio headunit that is similar ? thanx ... HAVE NICE DAY !