• China's largest vacuum tube manufacturer ShuGuang factory 2024 year new upgrade version
• 12AT7 made by ShuGuang China,Higher Durability and Life, Heavy Duty Cycle Military Specification Grade, Considered one of the best of the ECC81 12AT7 family of tubes for audio use.
• The sound is full, soft, delicate and poisonous.larger soundstage, Treble and bass is more noticeable.Can hear some details that did not hear before while more complex music.
• ShuGuang 12AT7 Can Perfect Upgrade and Directly replace 9-Pin ECC81 12AT7 tubes.
• HIFI level 12AT7 tubes show you the difference in natural voice reproduction and simple musical. Match it plate current and mutual conductance. Also pass a specialized life test, aging test and audio sound test.