Is 12AU7 same as 12AX7?

The 12AT7 tube is almost identical in looks to the venerable 12AX7 tube, and in many ways can be used for the same applications as a 12AX7. However, the 12AT7 features a somewhat lower gain (typically about a factor of 60-70) and runs at a higher current.

Can you substitute 12AU7 for 12AX7?

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.

How long do tubes last in a preamp?

2 – 3 years
Preamp Tubes are generally at their best 2 – 3 years. Power Tubes are generally at their best 1 – 1.5 years. Rectifier Tubes are generally at their best 3 – 5+ years.

Can I use a 12AU7 instead of a 12AX7 tube?

The 12AU7 makes a less ideal swap for the 12AX7 because other factors such as Bias come into play and the mismatch can cause the tube to sound unpredictable and very quiet. You may need to look into your guitar wiring to get the proper resistance load necessary to use a 12AU7 in place of a 12AX7.

What is the difference between the 12AT7 and 12AU7?

The 12AU7 has the smallest, at just 20. The lower gain of the 12AT7 and 12AU7 also allows them to have a higher headroom, which can provide a warmer and cleaner sound. What Is Gain/Amplification Factor?

What is a 12AT7 tube and what does it do?

The 12AT7 is another very well-known tube among guitar players. It has a much lower gain output at 60, but what you lose in gain you get back with more headroom, higher fidelity, and an increased current output. Because of their high fidelity, they are also used in many tube microphone preamps, compressors, recording equipment, and organs.

What is the difference between a 12AU7 and a 5965 tube?

The 5965 is a common version of the 12AT7 that has a lower output gain of 47. The 12AU7 has the lowest gain of these three, with an amplification factor of 20. This is used much less as a preamp tube and more often as a driver for spring reverb.