Equivalent to Western Electric WE-437A, this tube is quiet and has a very high gm which makes it suitable for low signal high gain applications like a phono preamp stage.
Russian version of 7199 which is used on amps such as Dynaco ST70. 7199 are specifically designed for HiFi audio application, and the Sovtek version provides an excellent value.
ECC 99 was developed as a driver tube for JJ 300B. ECC99 delivers excellent linearity with very strong drive capability, making it suitable for driver application for DIY audio projects.
ECC99 is similar to 12BH7A, and is a drop-in for most applications. Please note that on some amps, 12BH7A is used in power supply circuits and ECC99 is not a drop-in. If you are not certain, please check with the amp manufacturer first.
The following is NOS and vintage tubes in this category.
Due to the scarcity of some items, inventory will change constantly, so please check back often.
Be sure to check out our NOS terms.
The photos of NOS tubes are representative samples and actual NOS tube shipped may vary. "Various" means we have multiple brands in stock.
High-Mu Twin Triode. Metal can. Military version may be marked VT105. Used as phase inverter or voltage amplifier. The triodes are independent except for common cathode.
