1. The 2E36 is a 12AU7/ECC82 medium-mu twin triode vacuum tube. It is commonly used as both an preamp, as well as a phase splitter in guitar amplifiers.
2. The 2E36 has very low noise and low microphonics, making it suitable for both audio applications and sensitive stages such as microphone preamps. It also has excellent linearity and musicality, making it well suited for audio applications requiring smooth and detailed sound.