What tubes can replace 12AX7?

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.

What amps use 12AX7 tubes?

The most common preamp tube for tube guitar amplifiers is the 12AX7. They have been in use since 1947 – so the Fender Tweed’s, Vox’s, Supro’s, and many other amps up through the modern Marshall DSL100 amps use 12AX7 preamp tubes.

What is a gain tube?

The gain factor of a tube simply measures how much it amplifies the input signal. For example, the common 12AX7 tube has a gain factor of 100, while a 5751 tube (which is often used in place of a 12AX7) has a gain factor of 70.

How long does it take for preamp tubes to break in?

While power tubes take 100-200 hours to break in , input/driver Tubes also require some time. Usually less . If your tube pins ( legs ) are oxidized , clean them with De-oxit and a Q-tip .

What is the best sounding 12AX7 tube?

Best 12AX7 Tubes for Hi-Fi Reviewed

1. 1 Genalex Gold Lion Best 12AX7 Tube for Hi-Fi. See more reviews.
2. 2 JJ 12AX7 Preamp Vacuum Tubes (ECC83) for Hi-Fi. See more reviews.
3. 3 Tung-Sol 12AX7 Preamp Tube for Hi-Fi. See more reviews.

Can I use 12AX7 instead of 12AX7A?

So the bottom line is that you can use either of these tubes in your Marshall amp. It’s just that an NOS 12AX7A tube is considered to be premium over the 12AX7.

Is gain a distortion?

gain is the amplification factor, basically the ratio of output over input. the more you turn the gain knob up, the more overdrive/distortion you get, basically. Distortion is just more extreme overdrive. Both the 5150 and vh4 are high gain amps, and both are capable of producing distortion.

What should gain be set at?

To set the gain you want the maximum range of bandwidth, so you should turn the equalizer settings off or set them to zero. This prevents the filtering of any sound waves. Turn the gain to zero. This usually means turning the dial counter-clockwise as far as it will go.

Is the 12AX7’s a high gain tube?

A 12AX7 is a high gain tube. Various 12AX7 s tends to be a few points higher or lower on the gain. Due to the nature of the vacuum tube circuit, this doesn’t mean one will be louder than the other. Instead, the gain affects the tone and noise floor.

When to use a 12AX7 in an amp?

12AX7 is a high gain tube often used in the first stages of tube amps. Tube amps use multiple tubes, and the first position is referred to as V1. Because of the high gain, 12AX7 in V1 has a lot of effect on sonics. If you are looking to upgrade the tubes in your amp, 12AX7 in V1 where you want to start. There are many 12AX7 on the market today.

Which is the best 12AX7 tube for metal?

12AX7B Silver Dragon is the favorite amongst metal musicians, and for a good reason. If the high gain sound is what you are after, the 12AX7B Silver Dragon tube will do very well. We take great care in testing and screening these tubes since we know they will be used with the volume wide open.

What’s the difference between a 12AX7A and a Chinese twelveax7b?

What is the difference between a 12AX7A and a Chinese 12AX7B? ANSWER- The Chinese 12AX7B tube has a higher gain and a little more overdrive than the standard 12AX7A tube. It also is a quieter and Warmer sounding tube. It is a good tube to use for higher gain guitar amplifiers.