List of Mullard–Philips vacuum tubes

Mullard and Philips were prominent manufacturers of vacuum tubes (or thermionic valves) in the 20th century. They produced a vast range of vacuum tubes for various applications, including audio, radio, and television. Below is a list of some notable Mullard-Philips vacuum tubes: ### Audio & Hi-Fi Tubes: 1. **EL34** - A popular power amplifier tube used in guitar amplifiers.