Professional and complete service for all types of vacuum valves. If you wish, you can also send the valves to our office in Madrid. If you decide to use this service, contact us beforehand so we can give you a detailed estimate.

If you are interested in us checking your vacuum valves, you can do it now. The testing service would be done with our two testers: Hickok TV-7D / U and the Orange Valve Tester VT-1000.

With these we can tell you if the valves are new, used or broken. Before visiting our facilities, you will have to tell us which valve models you want us to test.

Lot of 5 new boxes for various models of vacuum valves as shown in the title of the advertisement.

Valves of Soviet military manufacture manufactured between the years 1970 to 1979. They have almost the same performance as the western 12AX7 valve but be careful! The filament voltage goes to 6.3V and not 12V and you will have to modify them or buy an adapter for it.

Soviet military-made valves made by Reflektor (now Sovtek ). They have almost the same performance as the 12AX7 western valve but be careful! The filament voltage goes to 6.3V and not 12V and you will have to modify them or buy an adapter for it. The difference with the 6N2P is that these vacuum valves last 5000 hours (+ 3000 hours difference).

Elektron EF40 Vacuum Valve. It has been tested with a professional team called Micro trace r, the study of the valve with its characteristics is sent to the customer. It is sent without its original box.

Philips Miniwatt EF40 vacuum valve. It has been tested with a professional team called Micro trace r, the study of the valve with its characteristics is sent to the customer. It is sent without its original box.

Sator EF40 vacuum valve. It has been tested with a professional team called Micro trace r, the study of the valve with its characteristics is sent to the customer. It is sent without its original box.

Haltron EF40 Vacuum Valve. It has been tested with a professional team called Micro trace r, the study of the valve with its characteristics is sent to the customer. It is sent without its original box.

Mc Murdoc 6J7 Vacuum Valve. It has been tested with a HICKOK TV-7D / U. It is sent without its original box.

Hytron 6J7 Vacuum Valve. It has been tested with a HICKOK TV-7D / U. It is sent without its original box.

Lot of 5 new boxes for various models of vacuum valves as shown in the title of the advertisement.

Ken Rad JAN 6J7 Vacuum Valve. It has been tested with a HICKOK TV-7D / U. It is sent without its original box.

ULTRON 6J7 vacuum valve. It has been tested with a HICKOK TV-7D / U. It is sent with its original box.

National Union 6J7 Vacuum Valve. It has been tested with a HICKOK TV-7D / U. It is sent without its original box.

Philips Miniwatt EF40 vacuum valve. It has been tested with a professional team called Micro trace r, the study of the valve with its characteristics is sent to the customer. It is sent with its original box.

Tungsram EF40 Vacuum Valve. It has been tested with a professional team called Micro trace r, the study of the valve with its characteristics is sent to the customer. It is sent with its original box.

Elektron EF40 Vacuum Valve. It has been tested with a professional team called Micro trace r, the study of the valve with its characteristics is sent to the customer. It is sent with its original box.

Soviet-made 6N1P military-made vacuum valves made by Reflektor or Reflector. These tubes are the perfect equivalents to the western ECC88 and also to the 6DJ8, 6922 and 6N1 vacuum tubes although it is advisable to first look at the specifications of your amp to see if they can handle it correctly.

Lot of 10 new boxes for various models of vacuum valves as shown in the title of the advertisement. These boxes are of current manufacture and their measurements are 7.9 x 2.5 x 2.5 cm = 1 "x 1" x 3 ". The weight of each box is 3 grams.

6J5 vacuum valve made in China with 7 pins. It is used in cheap Chinese amplifiers.

Vacuum valve ECH42 Miniwatt made in the Netherlands. New and unused (N.O.S).

Vacuum valve ECH42 Mullard made in Great Britain. New and unused (N.O.S).

6Z4 Vacuum tube made in China with 7 pins. It is used in cheap Chinese amplifiers.

ECC40 vacuum valve. It has been tested with a Micro trace r. They are shipped with their original box. They are from different eras (three different) which you can choose according to the internal number that we give below.

New and unused (N.O.S) military made JAN CHS 6K6GT valve from Sylvania ideal for replacing the 6V6GT on a Fender Reverb unit or for modifying a Fender Excelsior.

New and unused Dumont 6X4 EZ90 vacuum valve. Tested with a HICKOK TV-7D/U. Shipped in its original box.

Sylvania 5Z3 Vacuum Valve. It has been tested with a HICKOK TV-7D / U. It is sent without its original box.

Made in Slovakia. New and impressive quality for amplifiers and Hi-Fi equipment. Solid construction and rich details make this tube one of the best for preamp use.

Made in Slovakia. New and impressive quality for amplifiers and Hi-Fi equipment. Solid construction and many details make this tube one of the best for use in the preamp.

Vacuum valves made in the former Soviet Union by the legendary Reflector factory. Each valve of this model has been tested to determine its gain and grid tension to be able to match them with the maximum precision and with the least % difference with a professional team.

With the EL844 you will have all the tone but with less volume and with a 25% less performance power thanks to its lower gain which makes it very good to have good distortions at low volumes adding a compression plus to it. With the same good quality as its sister EL84.

100 compatible% with EL84.

This Slovak-made vacuum tube is the perfect choice for quality and price for amps with a lot of gain and you want to have less (70% gain).

Before shipping it is tested with an Orange VT-1000 Vacuum Valve Tester!

In the words of the manufacturer: "Smooth, velvet-like sound. Vintage-vibes galore, great upgrade for Fender s lacking that special kick."

Raytheon vacuum tube 12AT7 ECC81 made in USA. New and unused (N.O.S) and tested.

This medium gain valve (45 gain) that can be replaced in certain amplifiers by the 12AX7 (100 gain) to have a blues sound for example or for those devices that request it (although first you would have to consult the service manual to see if is 100% compatible%) gives very good sound, clear, with little noise and although it is made in Russia, its sound is 100% American.

This Russian made vacuum tube is the perfect choice for quality and price for high quality HI-FI amplifiers.

Before shipping it is tested with an Orange VT-1000 Vacuum Valve Tester!

This model of Yellow Jackets® converter, the YJR, is an adapter for use in most amplifiers which use 5AR4, 5U4, or 5Y3 tubes or other similar tubes. This Yellow Jacket® is a solid state device and as such does not come with vacuum tubes. Converts most audio amplifiers which use a vacuum tube rectifier 5AR4, 5U4 or 5Y3 to a solid state device. HANDMADE IN THE USA!

This Russian made vacuum tube is the perfect choice for quality and price for high quality HI-FI amplifiers and for Ampeg SVT and Blackstar HT-5 amplifiers. RT043

Before shipping it is tested with an Orange VT-1000 Vacuum Valve Tester!

Vacuum valve 12AT7 ECC81 from RCA made in USA. New and unused (N.O.S) and tested.

GZ34S is 5AR4 octal base rectifier diode. It provides strong current output. Suitable for all Hi-Fi and Guitar amplifiers.

New and unused Siemens EZ81 6CA4 vacuum tube. Tested with a HICKOK TV-7D/U. Shipped in its original box.

This robust vacuum valve can be used in any amplifier that is requested in conjunction with a 300B or 2A3.

They are tested with an Orange VT-1000 valve tester before shipping!

The TAD EZ81 / 6CA4 is a small rectifier tube for 6.3V filaments. It is used in smaller amps, such as the Marshall 1974X or the TAD 18W Plexi Kit, Silverstone amps and in various Hammond organ amplifiers. It is a true full power EZ81. Also used in many audio amps and in old tube radios. 

The Sovtek 5Y3GT tube is an indirectly heated full-wave rectifier tube intended for rectification in general purpose audio equipment. It has a 140 mA maximum output.

This is an entirely new design from Sovtek and a great step up in sound quality. They have very large ribbed plates and great sound reproduction. I found them very smooth and well balanced in terms of bass, mids and treble response.

The favorite choice of customers around the world who admire this great valve for its size and quality. While it converts the alternating current into direct current, it gives the amplifier a cleanliness of parasitic noise and a warm and sweet tone with wonderful compression.

Our Small Bottle Rectifier!

The rectifier tube for smaller vintage amps like the 5F1 Fender Tweed Champ or the Tweed Deluxe 5E3.

This small bottle version is the closest in performance and relaiblity to the vintage 5Y3GT of the 1950s. NOS Made in Russia.

Selected ECC83 for the big & warm clean sounds (great for HiFi too!) and mellow top-end when pushed to overdrive. Our recommendation if you want to emphasize punchy mids. Especially great when pushed into a fat overdrive.

Valve manufactured by New Sensor in Russia (like Mullard ). This 12AX7 is very similar in characteristics to the Mullard 12AX7 with low noise, excellent tonal and harmonic response. Guaranteed results from the first moment!

Before the vacuum valves are shipped, they are tested with an Orange Valve Tester VT-1000!

Tube modeled after the one made by RCA 6L6GC, has more gain than Sovtek 5881WXT (around 20% more). This valve is one of the best 6L6s manufactured today due to its low noise and microphony which gives it an excellent score for details and harmonic content. It withstands voltages between 425V to 500V very well and its Bias setting is very pleasant.

JJ 6L6GC vacuum valve made in Slovakia. The build quality is very robust with a glass of considerable thickness and mounted so well that it has very low noise and microphony levels.

Made in Slovakia. New and impressive quality for amplifiers and Hi-Fi equipment. Solid construction and rich details make this tube one of the best for preamp use.

The JJ Electronic EZ81 is a noval based rectifier with a rugged construction. These tubes are an excellent choice for guitar amps such as 18W Marshalls and Hi-Fi amplifiers as well. This tube will work in any EZ81 or 6CA4 application.

The JJ Electronic 12BH7-A is a faithful reproduction of the original tube. Its rugged construction offers high reliability. The JJ 12BH7-A can be used as a replacement for any 12BH7 tube.

This vacuum tube can be used in any amplifier that requests it including some old Ampeg brand. It is the valve equivalent to the 7247.

Vacuum valve manufactured by JJ Electronic in Slovakia. Robust valve manufactured according to the standards of the old ones, harmonically it is not very rich but it has a slightly higher gain than normal and a low noise level. If you don't want to spend a lot of money this could be your vacuum valve.

The JJ Electronic ECC832 can be used in place of any 12DW7 or 7247 tube. It's an excellent option for old Ampeg amps.

In the 12DW7/ECC832, Section 1 of the tube (pins 6, 7, and 8) is the high gain 12AX7/ECC83 spec (gain factor 100) and Section 2 (pins 1, 2, and 3) is the low gain 12AU7/ECC82 spec (gain factor 17).

Rock solid valve capable of handling high voltages. With the JJ 6V6s you will never have to look for NOS valves again, because it is designed like the old ones and even improved giving a sound from Blues to Rock with spectacular results that makes it one of the best 6V6s on the market by far.

Philips Miniwatt 12AU7 Vacuum Valve - ECC82. It has been tested with Micro trace r and the results can be seen in the photos section. They are shipped without their original box. (38)

Solid valves capable of withstanding high voltages. With the JJ EL34 you will have a tube with great results in bass and mid frequencies both for use in amplifiers and in heads of all kinds, especially of British origin. They are sold tested.

New and unused vacuum tube 5Y3GT / CV1856 from General Electric. It is tested by a Hickock TV-7D/U.

JAN 12AU7 Vacuum Valve manufactured by Westinghouse. It has been tested with a professional team called Micro trace r, the study of the valve with its characteristics is sent to the customer. It is not shipped with its original box.

The perfect vacuum tube for Fender Tweed Champ and Deluxe amps! This model withstands high voltages very well and has used the best existing materials to recreate the classic 6V6 of all life, which translates into spectacular sound, low noise and compression compared to the Electro-Harmonix or the JJ Electronic .

Philips Miniwatt 12AU7 Vacuum Valve - ECC82. It has been tested with a Micro trace r and the results are in the photos section. They are shipped without their original box. (39)

Trigon 12AU7 Vacuum Valve - ECC82. It has been tested with a Micro trace r and the results are in the photos section. It is sent with its original box.

Made in Russia. One of the best tubes you can buy for your amplifier or sound equipment now reissued by the New Sensor company. Excellent valve for its low noise level and couplings and for its musical details. Ideal to get a more British sound since, it reissues the vintage sound of the 60s quite clearly.

Made in Russia. One of the best tubes you can buy for your amplifier or sound equipment now reissued by the New Sensor company. Excellent valve for its low noise level and couplings and for its musical details.

Made in Russia. One of the best tubes you can buy for your amplifier or sound equipment now reissued by the New Sensor company. Excellent valve for its low noise level and couplings and for its musical details. Ideal to get a more British sound since, it reissues the vintage sound of the 60s quite clearly.

Perfect V2 + Preamp Tube - Good Gain - Tight Deep Bass - Fat Mid-range !!

Very good gain, tight deep bass, fat mids and silky top end with overall definition and brightness.
Selected with balanced systems and recommended for guitar amps to improve overall response.

Asymmetric double triode as used in old Ampegs. 

New and unused vacuum tube 5U4GB from Sylvania. It is tested by a Hickock TV-7D/U.

The TAD 7025 WA delivers full gain with smooth top end. No microphony issues even with the most sensitive preamps. The 7025 WA supports a fat midrange and creates a bold tone with lots of harmonics.

Played clean, the TAD 7025 WA delivers a warm liquid tone which is very responsive to dynamic playing.

Overdriven, the 7025 WA provides lots of sustain with well defined mid-range punch.

A faithfull reproduction of the Mullard / VALVO GZ34.

Pure power and the typical sag have been the distinguishing characteristics of the most popular guitar amps of guitar heroes since the 1960s.

Upgrade for 5U4GB and 5U4G.

RT501

Vacuum valves made in the former Soviet Union by the legendary Reflector factory. Each valve of this model has been tested to determine its gain and grid tension to be able to match them with the maximum precision and with the least % difference with a professional team.

The TAD™ 6V6GT-CZ has been added to the TAD Premium line in 2020. It is a glass envelope beam pentode having a plate dissipation rating of 14 Watts with convection cooling. It is intended for audio frequency power amplification service in either pentode, ultra-linear or triode connection and single or push-pull/parallel applications.

With the EL844 you will have all the tone but with less volume and with a 25% less performance power thanks to its lower gain which makes it very good to have good distortions at low volumes adding a compression plus to it. With the same good quality as its sister EL84.

100 compatible% with EL84.

The Sovtek 6550WE was designed to be the finest 6550 ever produced. Thicker plates, improved heat dissipation, higher transconductance, and increased linearity are just some of the inherent aspects of the new Sovtek super 6550s.

The best EL34 valve on the market today, competing very closely with the Svetlana! Great when you play clean or distortion, this tube will give you very low noise, microphones, and great tone and harmonic details. Absolutely recommended!

Perfect copies of the legendary XF2 Mullard EL34 tube from the 60s. It is the perfect tube for the Dynaco ST-70 and vintage Marshall brand amps although they can be used in all types of current amps. 100% British sound with low noise, good details and excellent sound and performance. One of the best EL34s on the market from a mythical brand.

New and unused vacuum valve GZ34 / 5AR4 from National Electronics manufactured by Sovtek in the former USSR. It is tested by a Hickock TV-7D/U.

Made in Russia. This Mullard is one of the best EL84 tubes currently on the market for those who need excellent response in sound and tone. When it distorts you will have a smooth and irresistible overdrive. When you try it you will never buy from another brand again!

ON REQUEST. DELIVERY IN 7-14 DAYS.

These ECC83 / 12AX7 tubes are the same ones used in all EVH® branded amplifiers. These are perfect for maintaining your EVH amp, or an easy modification for another tube amp. Includes 2 tubes.

Very resistant vacuum valve capable of withstanding 550V manufactured with a third element in the "plate" that makes it very little microphone compared for example with other Chinese or Russian valves. The balance of highs, lows and mids is very well balanced which makes it ideal for playing classic rock and for replacing them in your Marshall with 6550 tubes. A great choice.

These 5881 are the best in their category. Low noise level and microphones and with a high level of tonal and harmonic details. Recreated almost 100% from the NOS but at a better price. When you saturate these tubes you will have the professional sound you are looking for. Great for use in Tweed Amps, JTM45 and Bassman amps.

The perfect choice.

The Mullard GZ34 valve has always been the most demanded and now New Sensor faithfully reissues it in Russia with the same technical and sound characteristics.

Possibly the best grinding machine in its category.

This robust vacuum valve can be used in any amplifier that is requested in conjunction with a 300B or 2A3. They are sold paired.

They are tested with an Orange VT-1000 valve tester before shipping!

The tubes deliver fabulous tone and faithfully capture the authentic 6L6 sound characterized by bright highs, warm mids and excellent bass response.

The perfect vacuum tube for Fender Tweed Champ and Deluxe amps! This model withstands high voltages very well and the best existing materials have been used to recreate the classic 6V6 of a lifetime.

Valves (Matched Pair) modeled after the one made by RCA 6L6GC, have more gain than the Sovtek 5881WXT (about 20% more). These tubes are one of the best 6L6s made today due to their low noise and microphony which gives them an excellent score for detail and harmonic content.

The TAD™ 6V6GT-CZ has an extended plate voltage range which makes it ideal for higher power amplifiers like Jim Kelly and as an electric reliable substitute for overload conditions which are often seen with guitar amplifiers. Close manufacturing specification tolerances and improved processing provide enhanced reliability and superior sonic performance.

Due to many requests by fans, the Tung-Sol EL84 / 6BQ5 has been reissued. The Tung-Sol EL84 / 6BQ5 was a popular OEM tube for American-made EL84 / 6BQ5 guitar amplifiers, such as those built by Gibson and Harmony.

Made in Russia. This Mullard is one of the best EL84 tubes currently on the market for those who need excellent response in sound and tone. When it distorts you will have a smooth and irresistible overdrive. When you try it you will never buy from another brand again!

With the EL844 you will have all the tone but with less volume and with a 25% less performance power thanks to its lower gain which makes it very good to have good distortions at low volumes adding a compression plus to it. With the same good quality as its sister EL84.

100 compatible% with EL84.

Rock solid valves capable of handling high voltages. With the JJ E34 you will have a tube with great results in bass and mid frequencies both for use in amplifiers and in heads of all kinds, especially of British origin. They are sold tested and matched so that your amplifier gives you the best possible sound.