- Feb 3, 2015
Thanks as always for your tube knowledge!In my experience, tubes manufactured by the same company tend to sound the same or very similar. So start with the manufacturers you like.
Also, the vast majority of 7n7 were manufactured by Sylvania and a much smaller number were manufactured by National Union. Start with the tall bottles. Further, some folks believe that certain Sylvania 7N7 sound better than others. You might want to search for "Frankentube."