Prolly Chinese I would think. Their website might be helpful to take a peek at.put one of these in my v1 slot on my plexi'ish amp and just sounds nice and rich with nice dark feel to it.I know ruby does'nt make tubes,so is there another way of finding out what brand and type it is?
You'll find that even with tubes that don't have a great cachet or a bloodline to point to-sometimes there's something very special about a given tube and they're the ones you keep forever and want to be buried with.thanks that helped,it's a tested chinese 12ax.nothing special I guess but thias one sounds quite good,again thanks prairie dowg.