Vacuum Tube Data Sheet Library

Pre-amp Tubes:

The majority of pre-amp tubes are dual triodes. That means they have two independent gain stages within each tube. The exception is the EF86, which is a single stage pentode (note this has a different pin configuration). The most popular tube is the 12AX7, which has a gain factor of 100. However, it may not be the most appropriate tube, depending upon the type of sound/tone you're looking for.

Note that our PCBs are designed to use dual triode tubes in the pre-amp stage.

Usually a "W" designation means that the tube was designed to withstand heavy shock and vibration in industrial and military settings.