Is 7025 the same as 12AX7?

Is 7025 the same as 12AX7?

The ECC83 (12AX7) Valve The answer is simple. In ‘theory’ you’ll get a bit lower noise and lower hum with a 7025. Otherwise, they are identical.

What are 12AX7 tubes used for?

The 12AX7 is typically used as a class-A amplifier in the hi-fi, professional line and microphone preamps and is usually, always found in the preamp sections of tube guitar amps including Fender, Marshall, Boogie and Soldano.

How do you know if a tube is 12AX7?

Plug the tube into an electrical device to check its glow. Turn on the machine to activate the tubes, and look for an orange, red, or purple glow. If the heated filament inside the tube glows orange like a setting sun, it’s usually a sign that the tube is healthy.

What is the difference between 12AX7 and 12AT7?

The biggest difference between these power tubes is the amount of gain they will provide. The 12AX7 has a gain factor of 100, while the 12AT7 has 60. The lower gain of the 12AT7 and 12AU7 also allows them to have a higher headroom, which can provide a warmer and cleaner sound.

Are 12AX7 and ECC83 interchangeable?

In this article, we’ll concentrate on the question of the ECC83 vs 12Ax7 tubes. The truth is, there is no difference at all between them, and each one is interchangeable with the other. 12Ax7 (Fig 1) is merely the American name of the tube.

Can I swap 12AX7 for 12AT7?

You can interchange a 12AX7 with 12AT7, 12AU7, 12AY7 or 5751 as they are all the same pin structure, however they will each give you a different result in your amp. Each of these tubes has a different gain factor, which means some will give higher gain and others lower gain.

How does a vacuum tube work?

The basic working principle of a vacuum tube is a phenomenon called thermionic emission. When the cathode is heated, it gives off electrons via thermionic emission. Then, by applying a positive voltage to the anode (also called the plate), these electrons are attracted to the plate and can flow across the gap.

How long do vacuum tubes last?

Tubes don’t just “quit” suddenly. They lose their drive capability gradually with use. Small signal tubes like a 12AX7 or 6922 will work well on average for about 10,000 hours. If you leave your equipment on 24 hours a day, well you do the math: There are 8,760 hours in a year.

How do you know if a vacuum tube is good?

Any color from grey/silver, to black is healthy. When a vacuum tube develops an air leak (a small crack or bad seal by a pin for example) this getter color will change to pure white. If you see this you know with 100% certainty that the tube is bad.

Can I replace 12AU7 with 12AT7?

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.

How long do ECC83 tubes last?

Rectifier Tubes are generally at their best 3 – 5+ years.

Can a 12AU7 replace a 12AX7?

Can 6N2P tubes be used instead of 12AX7?

6N2P tubes are a replacement for 12AX7 in any typical amp application, but they have 6.3V heater voltage and would need a different wiring than stock 12AX7’s. Q: How do I rewire the socket to use such tubes?

What does 6N2P-EV mean?

Reading in the web often 6N2P-EV tubes are defined as to have a gain slightly higher than the 12AX7 tube, 110 instead of 100. but in Wikipedia http://en.wikipedia.org/wiki/6N2P the gain of a 6N2P tube is defined as lower than the 12AX7 tube and the. 6N2P-EV is compared to the 5751WA tube.

What is a 12ax7vka tube?

In the late 1980s Voskhod Sunrise produced a 12AX7 variant derived from the 6N2P-EV, under the designation 12AX7VKA. The Voskhod Sunrise 12AX7VKA tube used a larger bottle than other 12AX7s and did not fit in most Chinese shield bases.

How long does it take for 6N2P tubes to be delivered?

Average delivery time to United States is 19 days. Durable, low noise/microphonic double triode, close by characteristics to the 12AX7/ECC83. Made by VOSKHOD factory (ROCKET logo). 6N2P tubes are a replacement for 12AX7 in any typical amp application, but they have 6.3V heater voltage and would need a different wiring than stock 12AX7’s.