Preamp Tube FAQ – Frequently Asked Questions about 12AX7, 12AT7, and 12AU7

preamp tube faqHave 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 is the most common Preamp Tube?

In answer to our first Preamp Tube FAQ, we can say that the 12AX7 is, by far, the most common type of Preamp Tube used in guitar amplifiers. The 12AX7 has the highest gain value, and it is, therefore, the one most preamps are designed to use. You can often substitute lower gain tubes for the 12AX7s without harming your amplifier.

Continue reading “Preamp Tube FAQ – Frequently Asked Questions about 12AX7, 12AT7, and 12AU7”

What is the Difference Between the 12AX7, 12AT7, and 12AU7 Preamp Tubes?

12AX7, 12AT7, and 12AU7Let’s take a look at the less glamorous, but equally important type of amplifier tube – the preamp tube.

The 12AX7, 12AT7, and 12AU7 all belong to the same family of nine contact, twin triode tubes. In many cases, these tubes are interchangeable and can easily be swapped. We will take a look at why you might, or might not want to swap out the different types of tubes.

Continue reading “What is the Difference Between the 12AX7, 12AT7, and 12AU7 Preamp Tubes?”