Electro Harmonix is a brand owned by the American New Sensor Corporation and manufactured at the Xpo-Pul - Reflektor factory in Saratov, Russia. The Electro-Harmonix 12AU7A-EH / ECC82 is a new premium quality dual triode preamp tube with a gain of 17mu, built to match the performance of the military-industrial original GE6189 tube. It features a low noise floor, low microphonics, and excellent linearity making it ideal for low-noise preamps and driver circuits.
Open Datasheet 12AU7A / ECC82