The JJ ECC81 tube also refereed to as a 12AT7, is known for its warm and smooth sound, making it a popular choice among musicians and audiophiles. It was widely used in vintage audio equipment and can still be found in some modern audio products, especially those designed to recreate classic tube-driven tones.

All Ruby Tubes are pre-sorted, tested, and burned in. You can count on these for quality assurance!

6 month warranty on all tubes.