2 Best 12Ax7 Tube For Phono Preamp

Nobsound 12AX7 (ECC83) 12AU7 (ECC82) Vacuum Tube Preamp HiFi Preamplifier

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Nobsound Little Bear T11 6N2/12AX7 Vacuum&Valve Tube Phono Turntable Preamplifier; MM RIAA LP Vinyl Record Player Preamp; Stereo HiFi Audio Pre-Amplifier

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Contents

Which 12AX7 sounds best?

The Genalex Gold Lion is the most exclusive of the types. The Original Genalex Gold Lion tubes are some of the best in the world. They have a large sound stage that is used by high end audio engineers who want the best sound.

Are 12AX7 preamp tubes?

The 12AX7 is a popular tube guitar amplifier tube. Since 1947, the 12AX7 tubes have been used in the Marshall DSL 100 amplifier.

What tubes are interchangeable with 12AX7?

It is possible to 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 amplifier. Each tube has a different gain factor, which means it can give higher or lower gains.

Is an ECC83 the same as a 12AX7?

Both of them are the same. They all have the same name. There is something that is confusing, but it is true. There are two designators, one American and one British.

What’s the difference between 12AX7 and 12AX7A?

These are not military tubes and are not the same as the ones used in the military. As tube manufacturing got more refined, the 12AX7A became much quieter. A lot of the 12AX7’s were labeled 7025’s, which is a very quiet version. Both of these tubes can be used in your Marshall amplifier.

What is the difference between 12AX7 and 12AT7?

The 12AX7 has a gain output of 100, compared to the 12AT7 which has a gain output of 60. The high gain of the 12AX7 can cause it to be prone to distortion and clipping.

What is the difference between 12AX7 and 12AU7?

The amount of gain that these power tubes will give is the biggest difference between them. The gain factor is 100 for the 12AX7 and 60 for the 12AT7. The smallest is only 20. A warmer and cleaner sound can be provided by the lower gain of the 12AT7 and 12AU7.

How long do 12AX7 tubes last?

Small signal tubes like the 12AX7 or 6922 will work well for a long time. There are 8,760 hours in a year if you leave your equipment for 24 hours a day.

Are all 12AX7 the same?

The amplification factor for the tubes is 100. The same gain should be achieved when placed in the same circuit. There are comparative gain differences between the 12AX7s.

Can I replace 5751 with 12AX7?

The audio guy has a 70 gain on the 5751 compared to a 100% gain on the 12ax7. There are some differences in operation that will work without an issue. I have used black plates from GE and Sylvania. It’s better for me to like the Sylvania more.

Are preamp tubes interchangeable?

It is possible to swap the same type of tubes. It is recommended that any 12AX7 be compatible with another 12AX7. You can change brands of power tubes. There are tubes from different manufacturers.

Do tube preamps sound better?

Even Harmonics are the result of distortion when a tube is created. These are tones with the same note but produced higher in the air. Tubes are said to sound better due to the fact that they produce more pleasing sounds to the user’s ear.

Can you connect a preamp directly to speakers?

If your speakers don’t have a built-in amplifier, you won’t be able to connect them directly. There is a PHONO input or a PHONO/LINE switch on the back of one of the speakers if it is a speaker with a phono preamplifier.

Can I use 12AX7 instead of ECC83?

It can be difficult to change tubes in an amplifier since there are so many of them. We will look at the question of the ECC83 vs 12Ax7 tubes. There is no difference between them, they are interchangeable.

What is the difference between ECC83 and ECC83S?

The ECC83S is pretty aggressive, but the ECC83MG is a little more respectful. Even though it has a fair amount of density, it is still very open sounding and can be played clean or overdriven.

Can I substitute 12AX7 for 12AX7A?

There isn’t any difference anyways. Correct, that’s right. The lower mu of the 5751 is not equivalent to the 12AX7A. If you’re sure RIAA correction doesn’t depend on its’ characteritic values, don’t replace a 12AX7(A) and its’ equivalents numbers in a phono preamplifier.

How does a 12AX7 work?

There are two tubes in one of the 12AX7’s middle and right places. Pin 1 leads to the output, Pin 2 leads to the input and Pin 3 leads to the electrons. Pin 6 leads to the ‘B’ triode’s plate, Pin 7 leads to the grid and Pin 8 leads to the cupola. The pins are connected to the heaters.

What are 12AX7 tubes used for?

The 12AX7 is typically used as a class-A amplifier in the hi-fi, professional line and microphone preamplifiers and is usually found in the pre-amplifier section of tube guitars.

Are 12AX7 and 12AU7 tubes interchangeable?

There are nine contact, twin triode tubes in the 12AX7, 12AT7, and 12AU7 families. In a lot of cases, these tubes can be swapped.

Can a 12AX7 be used as a power tube?

It is a dual-triode that can be used as a voltage amplifier, a pre-amp valve, or as a current amplifier.

Do 12AX7 tubes need to be matched?

What is that thing? Matching the 12AX7s is a good idea, but it is not essential. Linestage tubes are similar to the 6DJ8 variety. If they are matched, you will get even gain from the two tubes.

What is the difference between 12AX7 and 12AY7?

The 12AY7 tubes have a variety of properties. They draw more current than a 12AX7 and have different internal capacitances for elements and plates. There are differences in the sound of the 12AX7 tube.

Do preamp tubes affect tone?

The gain of the first tube has a direct impact on the tone that you achieve from the whole amplifier.

Is it OK to touch vacuum tubes?

If the vacuum tubes are cool and skin oils are not a problem, then it’s okay to handle them with no hands.

Can bad preamp tubes cause volume loss?

The wooden part can be used to tap the main power tube. If you hear a tube with a high ringing rattling sound, it’s the bad tube. Tone sounds will be dulled if bad tubes are used. This can happen when a tube goes bad.

Do preamp tubes need to be biased?

You don’t need to worry about biasing or using matched pairs as you do with power tubes if you use a pre-amplifier tube. If your new tube is the same model as your old one, you are good.

What is preamp tube matching?

Preamp tubes are used in high fidelity audio equipment. A dual triode is when there are two triodes in a tube. The idea is that all of the tubes have the same electrical or electronic properties.

Do tubes have to be matched?

You need equal DC bias currents per tube if you want to buy matching tubes. If you don’t have an amplifier that lets each tube be adjusted independently, you need to buy matching tubes.

Is tube better than solid-state?

Solid-state Amps are usually cheaper and more sturdy than tube Amps, even though tube Amps are generally better than solid-state Amps in terms of sound quality.

Can you use a tube preamp with a solid-state amp?

Most tube amplifiers have an input impedance of at least 100K Ohms, which makes them compatible with most tube preamplifiers. The input impedance of the preamplifier should be 5,000 or less, because most solid ohms state Amps have an input impedance of 50K ohms.

Do preamps really make a difference?

A high quality microphone preamplifier is more than just making your mic louder. A cleaner, more accurate signal will be delivered with higher gain, lower noise, less distortion, and more headroom.

Do I need a phono preamp for my turntable?

A phono stage is a necessity when it comes to getting your vinyl setup off the ground: they provide standard equalisation and boost the weak signal from your deck to a level that allows.

What color should power tubes glow?

A violet glow is visible around the inside of a glass bulb. It’s the result of electron bombardment of the glass within the power tube.

What makes a good preamp?

Budget designs tend to have less distortion and a lesseffortless sound character than high-end ones. A high-end preamplifier might have a maximum output capability of +32 or even +36 dBu, whereas a budget one might only manage +16d Bu.

Can you use a preamp with active speakers?

It is possible to use an external preamplifier with turntables without a built-in one. This will allow you to connect to an existing audio system. Many turntables have one built-in that can be used with an external preamplifier.

What amps use 12AX7 tubes?

The 12AX7 is a popular tube guitar amplifier tube. They’ve been in use since 1947 and are used in the modern Marshall DSL 100 Amp.

How long do audio tubes last?

Power tubes can last up to 6 months in heavy playing conditions. It depends on how long you play and how loud you are. If you don’t match up the impedances, it will cause strain on the power tubes and cause them to wear down more quickly.

Should I leave my tube amp on all the time?

If you don’t plan on using your tube amplifier a lot, you should turn it off when you’re done. Tube life is shortened by leaving a tube amplifier on. There is a lot of heat produced by many tubes.

Why do tube amps sound better?

Tubes are used because they make the music sound better. Ditto for the guitar amplifier used to create music. Tubes distort when pushed to the edge, which is more musical than the artificial sounds of a transistor amplifier.

How long should you leave a tube amp on standby?

When you first turn on your amplifier, you want the switch to be in a position that will not produce sound while the tubes are warm. If you want to rock at whatever volume you want, just flip the switch to the “on” position and you’re good to go.

Are all 12AX7 tubes the same?

The amplification factor for the tubes is 100. The gain ought to be the same when placed in the same circuit. There are gain differences between the 12AX7s.

What is the difference between 12AX7 and 12AT7?

The gain output of the 12AX7 is 100, while the 12AT7 has a gain output of 60. The high gain of the 12AX7 can cause it to be prone to distortion and clipping.

How long is 12AX7 tube?

Small signal tubes like the 12AX7 or 6922 will work well for a long time. There are 8,760 hours in a year if you leave your equipment for 24 hours a day.

What’s the difference between 12AX7 and 12AX7A?

These are not military tubes and are not the same as the ones used in the military. As tube manufacturing became more refined, the 12AX7A became quieter. A lot of the 12AX7’s were labeled 7025’s, which is a very quiet version. Both of these tubes can be used in your Marshall amplifier.

What is the difference between 12AX7 and 12AU7?

The amount of gain that the power tubes will give is the biggest difference between them. The gain factor is 100 for the 12AX7 and 60 for the 12AT7. The 12AU7 is the smallest of all of them. A warmer and cleaner sound can be provided by the lower gain of the 12AT7 and 12AU7.

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, but they will give you different results in your amplifier. Each tube has a different gain factor, which means it can give higher or lower gains.

Can you mix preamp tubes?

It is possible to swap the same type of tubes. It is recommended that any 12AX7 be compatible with another 12AX7. You can change brands of power tubes. 6L6 tubes were manufactured by different manufacturers.

Is 12AX7 the same as ECC83?

The ECC83 is the same valve as the 12AX7 vacuum Tube, but it is called the 12AX7 Valve. There are two identical triodes that have high voltages.

Are 12AX7 and ECC83 interchangeable?

We will look at the question of the ECC83 vs 12Ax7 tubes. There is no difference between them, they are interchangeable. The tube is called 12Ax7 in the United States.

Can I replace 5751 with 12AX7?

The audio guy has a 70 gain on the 5751 compared to a 100% gain on the 12ax7. There are some minor differences in operation that will work without an issue. I have used black plates from GE and Sylvania. It’s better for me to like the Sylvania more.

Which 12AX7 sounds best?

The Genalex Gold Lion is the most exclusive of the types. The Original Genalex Gold Lion tubes are some of the best in the world. They have a large sound stage that is used by high end audio engineers who want the best sound.

What tubes are in a Peavey Classic 30?

Peavey Classic 30 Tube Set has 3 x 12AX7 preamp tubes and 4 xEL84 power tubes. From vintage to contemporary, these true all-tubes span the landscape with ease.

Do tube preamps sound better?

Even Harmonics are the result of distortion when a tube is created. These are tones that have the same note but are produced higher up. Tubes are said to sound better due to the fact that they produce more pleasing sounds to the user’s ear.

How do you know if your tubes are matched?

If your tubes are not compatible with 200v of your tube tester, you should use a multimeter with a bias tool to check.

What is a matched set of tubes?

Matching sets of replacement tubes are offered by a few companies. The tubes have been tested to see if they have the same current draw.

Are 12AX7 and 12AU7 tubes interchangeable?

There are nine contact, twin triode tubes in the 12AX7, 12AT7, and 12AU7 families. In a lot of cases, these tubes can be swapped.

What is a 12AT7 tube used for?

The 12AT7 is a mini, high-mu twin triode that can be used as a grounded-grid radio-frequency amplifier. The mu of this tube is 60, as compared to the higher gain 12AX7 with a factor of 100, and the 12AU7 with a mu of 20.

Are vacuum tubes interchangeable?

The glass envelope is the same as before. It is possible to use them interchangeably with no issues.

How does a 12AX7 tube work?

There are two tubes in one of the 12AX7’s middle and right places. Pin 1 leads to the output, Pin 2 leads to the input and Pin 3 leads to the electrons. Pin 6 leads to the ‘B’ triode’s plate, Pin 7 leads to the grid and Pin 8 leads to the cupola. The pins are connected to the heaters.

Are tube amps worth it?

Tubes do not require as much maintenance as some people think. It’s worth it for the tone if you take care of your equipment.

Can bad preamp tubes cause volume loss?

The wooden part can be used to tap each tube. If you hear a tube with a high ringing rattling sound, it’s the bad tube. Tone sounds will be dulled if bad tubes are used. This occurs when a tube goes bad.

How do I know if my 12AX7 tube is bad?

It’s possible to hear strange sounds, loss of power, or a lot of distortion. There are signs that a tube isn’t working. One or more bad power tubes, or even a dying phase tube, are often the result of power loss that seems like the amplifier is only half power.

What is high gain tube?

The tube’s gain factor is used to measure how much amplification it provides. The common 12AX7 tube has a gain factor of 100 and the 5751 tube has a gain factor of 70.

What is V1 on a tube amp?

Preamplifier V1 is the first one. With some simple know-how and experimentation, it can lead to a dramatic tonal variation of any tube guitar amplifier.

Should tubes be matched?

Matching power tubes is necessary because the way they amplify signal can create bad sound if they are poorly matched, but pre-amp tubes aren’t used that way and so matching them isn’t necessary.

Do preamp tubes affect tone?

The gain of the first tube affects the tone of the whole amplifier.

Do you need to bias 12AX7?

Most designs have a bias of – 1.5 V, but keep in mind that in 12AX7 grid current is around -0.5 to -0.9 V.

Do preamp tubes need to be balanced?

The last pre-amp tube is referred to as a balanced tube. You want to make sure this is balanced. You don’t need a lot of them. The other pre-amp tubes do not need to be balanced.

Do preamp tubes need to be matched and balanced?

Matching preamp tubes isn’t necessary. There are two triodes in the tubes that operate on their own. It’s not necessary to match them.

Do preamp tubes need to be biased?

As with power tubes, you don’t need to worry about things like biasing or using matched pairs with the preamplifier tubes. If your new tube is the same model as the one you’re replacing, you are good.

What happens if power tubes are not matched?

The result is distortion if the gain of one tube does not match the gain of the other. Gain matching on a simple tube tester may not reflect what you get in your amplifier due to the fact that most tube testers can’t measure gain at full power.

What does apex matched mean?

Matching tubes are used for plate current and transconductance. Transconductance is a measurement of how much the plate current changes when the control grid voltage is changed.

Is Boss Katana a tube amp?

It sounded great to play, thanks to the design of Boss’ Tube Logic. The ‘Clean’ channel has been updated to make it feel more classic.

How much does a McIntosh mc2152 cost?

The MC 1502 is a stereo amplifier that is designed for people with deep pockets. The suggested retail price is $11k.

What’s more important preamp or power amp?

If you don’t have a power amplifier, you won’t hear sounds at the level you like. It’s not necessary to have a preamp in order to balance your instrument.

Do preamps reduce noise?

If you want to record quiet sources with microphones or ribbons, a high quality ultra low noise preamplifier can improve the noise performance by as much as 6 decibels.

Can I connect a preamp to an integrated amplifier?

If you like the tone of that particular preamplifier, you can use it with an integrated amplifier. Adding a preamplifier to an integrated amplifier can make the noise worse. It is better to use a power amplifier than an integrated one.

Why do I need phono preamp?

A phono stage is a necessity when it comes to getting your vinyl setup off the ground: they provide standard equalisation and boost the weak signal from your deck to a level that allows.

How much should I spend on a phono preamp?

Randall recommends investing 20% of your budget on the phono preamplifier, splurging for flexibility in terms of adjustments like gain, loading and compatibility with moving coil, if you want to mess around. There is a difference between $300 and $1,000 bookshelf speakers.

Can I use aux input for phono?

Is it possible to use the aux input for sound? It is possible to use the aux input on a receiver for phono, but only if you use a stand alone preamplifier for your turntable or a built-in one.

Should amp tubes glow blue?

A tube that is glowing blue is often wrongly perceived as a defect, but it’s actually just a side effect of a power tube. The tube is in good shape. This phenomenon is caused by the vacuum inside the tube being very good.

Why do valves glow blue?

A blue hazy glow can be seen inside an amplifier tube. Most of the time, this glow is not a sign of a defect, but a symptom of the power tube. There is a glow called florescence. The glass is being bombarded by the electrons inside the tube.

Do phono preamps make a difference?

It is possible to make a big difference in sound quality by using a good phono preamplifier. There is a critical job done by this component. It is possible to use it with a line level input on a receiver or amplifier.

Do preamps sound different?

There are vastly different sound colors for vintage and tube preamplifiers. A pleasant graininess adds a unique presence to some of the sounds. Some give the sound an airy 3D-like quality, others are very direct and in your face.

Do preamps really make a difference?

A high quality microphone preamplifier is more than just making your mic louder. A cleaner, more accurate signal will be delivered with higher gain, lower noise, less distortion, and more headroom.

Can you connect a phono preamp to powered speakers?

A few powered bookshelf speaker pairs, such as the Klipsch R-51PM, have phono inputs so they can connect directly to turntables that don’t have a sound card. If you want to use most powered speakers, you need to use a turntable with a built-in amplifier or connect an external amplifier.

What is a phono preamp?

A circuit is used to equalize the output of a turntable’s analog output. RIAA is needed to restore the original signal after the output is boosted to a level equivalent to other audio sources.

Can I connect powered speakers to an amplifier?

Is it possible to use an amplifier and powered speakers? The speakers are supposed to not have an amplifier. The speaker terminal should never be connected to the amplifier’s power output.

Do powered speakers need to be plugged in?

amplification is needed for every set of speakers. Speaker drivers need to be connected to a separate amplifier or receiver so that they can make sound.

Do active speakers need an amp?

When passive speakers need an external power amplifier to operate, active speakers have an in-built power amplifier that just needs a power source. You don’t need an amplifier for active speakers if you have a passive speaker.

Does the AT LP60 have a preamp?

The AT-LP60 can be connected to your computer, home stereo, powered speakers and other components without a turntable.

Does the LP60X have a preamp?

This turntable plays both 33 to 1/3 and 45rpm records and can be connected to your home stereo, powered speakers, computer and other components, even if they don’t have a dedicated phono input.

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