TAD vacuum tubes?

@dekay I’ve never noticed the raised lettering in the bottom of my TAD Red Base EL34s - I’m now curious.

I can’t say much about the sonic signature of these tubes since I was previously running KT88s in my amp. I will say that these EL34s have been reliable over the course of the past 9 months with long use during the weekends. If I remember correctly I paid just under $200 for a quad from Viva.

Toro3:

One of the lettering pics was @ TubeDepot.

Seems that most of the online reviews of this tube are for its use in guitar amps, which does not equate to HiFi (IMO) and I played electric guitar from the early 60's until 1986.

Back then I was more picky about the tubes in my guitar amps than the tubes I used in my Eico, Mac and Dynaco gear.

DeKay

Thanks for the input.  When the time comes I'll need a couple of matched sextets.