12AT7 MULLARD WA CV4024 KQDD/K MADE IN GREAT BRITIAN
Not many of these left, amazing sounding, great construction, overall
a classic tube.
Adds great punch, and is bright.
Mullard was a British manufacturer of electronic components, including vacuum tubes, during the mid-20th century. They were known for producing high-quality tubes that were used in various audio equipment and amplifiers.