The United States GE5670W is a new original box sixties with the same batch of tubes, the sound of a comprehensive soft, delicate, toxic sound tube. Precise matching pipe, please rest assured to buy. The new original GE produced the United States JAN-5670W, jun-level audio tube can be directly upgraded substitution6N3/6H3N/396A /2C51/5670, sound transparent rounded, bile rich, High-frequency slender soft, IF magnetic, low-frequency potential deep without losing flexibility.