Have you been scratching your head about 12AX7, 12AT7, and 12AU7 Preamp Tubes? Well, our most frequently asked questions about them are answered here.
Preamp Tube FAQ: What do Preamp Tubes do?
Preamp Tubes amplify the very low signal coming from your guitar. The amplified signal is better prepared to go through the circuitry of your amplifier. This amplified signal then goes to your EQ controls, your Reverb, Auxiliary Outputs, and also into your Output Tubes. All tubes are essentially mini amplifiers within your amplifier.