Enhance your audio system with this high-end 12AU7 Tungsram quad unit. This vintage tube preamp boasts four units of ecc82 model, all from Hungary. The unit type is a compact and powerful tube that is perfect for vintage audio and recording equipment. With its superior quality and unmatched performance, this 12AU7 Tungsram quad unit is a must-have for any audio enthusiast. The matched quartets ensures that your audio system is well-balanced to handle the most demanding audio applications. Get your hands on these NOS NIB tubes today and enjoy an unparalleled audio experience.