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1 From 24
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Tube Amp Doctor GmbH
RT501-OS TAD GZ34/5AR4-STR Old Style, brown base
GZ34/5AR4-STR TAD Old Style, brown base
The Pure and Typical Sag! 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...

€36.50 *
Remember Part Number: RT501-OS
Tube Amp Doctor GmbH
RT043-MASTER 12BH7A REDBASE TAD Premium Selected  (symmetrisch/balanced)
12BH7A REDBASE TAD Premium Selected (balanced)
Maximum of Reliability - Outstanding Tonal Quality! 1st Choice for Ampeq SVTs! The all-new TAD 12BH7A REDBASE combines the best sonic and mechanical performance of the NOS RCA black plate with advantages of the GE version. A maximum of...

From €33.90 *
Remember Part Number: RT043
Tube Amp Doctor GmbH
RT512-MASTER TAD 5U4G REDBASE PREMIUM SELECTED
TAD 5U4G REDBASE PREMIUM SELECTED
The Big Bulb Big bulb vintage rectifier tube, used in high-end audio amplifiers but also in modern recto-type amps, such as the Mesa Boogie Double/Triple Recitifer. It can replace the 5U4GB. Its tone is smoother than that of a solid...

From €42.80 *
Remember Part Number: RT512
Hint!
Tube Amp Doctor GmbH
RT501-MASTER GZ34-STR TAD REDBASE PREMIUM SELECTED
GZ34-STR TAD REDBASE PREMIUM SELECTED
The Pure and Typical Sag! A faithfull reproduction of the Mullard/VALVO GZ34 (aka 5AR4) with the perfection of our REDBASE™ series Pure power and the typical sag have been the distinguishing characteristics of the most popular guitar...

From €36.50 *
Remember Part Number: RT501
Tube Amp Doctor GmbH
RT89 KT88-STR REDBASE TAD Premium Matched
KT88-STR REDBASE TAD Premium Matched
Our favourite Tube in the KT88 / 6550 Class TAD - KT88-STR REDBASE - analog sound in perfect audio-quality High Performance Audio Beam Power Tetrode Our new TAD KT88-STR REDBASE is built in the style of the early British MOV KT88 with...

From €73.95 *
Remember Part Number: RT891
Tube Amp Doctor GmbH
RT88 TAD 6550A-STR REDBASE, Premium Matched
TAD 6550A-STR REDBASE, Premium Matched
Remake of the Classical GE6550A - TAD 6550A-STR REDBASE - depth, power & detail in perfection The breathtakingly large and precise sound as well as its straightforward appearance make the new TAD 6550A-STR REDBASE the first choice for...

From €73.95 *
Remember Part Number: RT881
Tube Amp Doctor GmbH
RT87 EL84-STR REDBASE TAD PREMIUM  Matched
EL84-STR REDBASE TAD PREMIUM Matched
The all new TAD-EL84-STR REDBASE brings together the best of both - the famous EL84-Cz and the EL84M. We opted for the thickest glass possible and the heaviest construction available, just like the Russian EL84M, and combined these...

From €24.95 *
Remember Part Number: RT871
Hint!
Tube Amp Doctor GmbH
RT12 TAD EL34 - STR REDBASE TAD PREMIUM Selected
TAD EL34 - STR REDBASE TAD PREMIUM Selected
The new EL34 Standard The new TAD EL34-STR REDBASE™ developed completely from scratch! Yet, the results are phenomenal. In the tradition of the legendary Telefunken EL34, the TAD EL34-STR REDBASE™ provides a gorgeous, dynamic and...

From €39.80 *
Remember Part Number: RT121
Tube Amp Doctor GmbH
RT83 6V6GT-STR REDBASE TAD PREMIUM Matched
6V6GT-STR REDBASE TAD PREMIUM Matched
TAD 6V6GT-STR REDBASE PREMIUM Selected Tube With the TAD 6V6GT-STR REDBASE we have succeeded in combining the tonal characteristics of an NOS 6V6GT such as from RCA or GE with the current requirements. t is a heavy duty 6V6GT tube, which...

From €34.90 *
Remember Part Number: RT831
Hint!
Tube Amp Doctor GmbH
RT81 6L6WGC-STR REDBASE small bottle TAD PREMIUM Matched
6L6WGC-STR REDBASE small bottle TAD PREMIUM Matched
The Classic Sound of the 1950s and 60s - Excellent Tone, Maximum Lifetime! TAD 6L6WGC-STR REDBASE clear top - small bottle - absolute vintage style! juicy mids, tight bass and airy - easy to listen top end. The perfect choice for vintage...

From €39.80 *
Remember Part Number: RT811
Hint!
Tube Amp Doctor GmbH
RT10 6L6GCM-STR REDBASE TAD PREMIUM Selected
6L6GCM-STR REDBASE TAD PREMIUM Selected
Our answer to the challange to build the best 6L6 type tube ever manufactured! brandnew in 2021 The TAD 6L6GCM-STR REDBASE is our latest 6L6GC designed and built to claim to be the best 6L6 type tube ever manufactured. A damn high claim,...

From €36.80 *
Remember Part Number: RT101
NEW
Tube Amp Doctor GmbH
RT-12AX7-MASTER TAD 12AX7/ECC83 REDBASE  Premium Selected
TAD 12AX7/ECC83 REDBASE Premium Selected
the new TAD 12AX7 / ECC83 REDBASE ® - Premium Selected - Good Gain - Airy Top End - Fat Mid-range!! The TAD 12AX7 / ECC83 REDBASE ® Premium Selected provides very good gain, tight bass, fat mids and silky top end with overall definition...

From €29.80 *
Remember Part Number: RT-12AX7
Tube Amp Doctor GmbH
NN161 EL34B-STR TAD
EL34B-STR TAD
TAD/STR great power, BIG tone, brown base used by: Diezel®, Hughes & Kettner®, Engl®, Koch®, Laney®, Marshall®, Octave Audio®

From €14.80 *
Remember Part Number: NN161
Tube Amp Doctor GmbH
NN821 KT66 TAD/OEM
TAD KT66
TAD KT66

From €34.95 *
Remember Part Number: NN821
Tube Amp Doctor GmbH
RT-6922-MASTER 6922 / E88CC TAD Premium Selected  (symmetrisch/balanced)
6922 / E88CC TAD Premium Selected (balanced)
The TAD-6922 / E88CC (~ CCa) is the High-End-Version of the ECC88 or 6DJ8. Selected for perfect balanced audio output and lowest noise. The 6922 is used worldwide from demanding HiFi amplifier manufacturers seeking for highest consistent...

From €46.80 *
Remember Part Number: RT-6922
Tube Amp Doctor GmbH
RT-6SJ7-MASTER 6SJ7 TAD  Premium NOS Selection
6SJ7 TAD Premium NOS Selection
Carefully tested and selected 6SJ7 metal tube. Very pleasing tonal charactistic, with rich mid-range giving live to music. Equivalent to VT116 and CV591. Also replaces directly 6SJ7G / CV591 and 6SJ7GT / CV592. Seleced for low noise...

€26.00 *
Remember Part Number: RT-6SJ7
Tube Amp Doctor GmbH
RT-6SL7-MASTER 6SL7GT TAD Premium NOS Selection
6SL7GT TAD Premium NOS Selection
Metal base 6SL7GT Tube with silky clear top end and rich mid-range. Very pleasing tonal charactistic giving live to music. Upgrades 6N9 and the russian 6n9p. Seleced for low noise and gain-balanced triodes.. NOTE: these tubes are...

From €43.11 *
Remember Part Number: RT-6SL7
Tube Amp Doctor GmbH
RT-EF86-MASTER EF86 / 6267 TAD Premium Selected
EF86 / 6267 TAD Premium Selected
The New Vintage Pentode! This pentode is selected for low-noise and low microphonics and is used in many (european) hi-fi preamps. It recently gained popularity because it is used in many new guitar amps based on the vintage AC15...

From €36.50 *
Remember Part Number: RT-EF86
Tube Amp Doctor GmbH
RT002-MASTER 12AT7 / ECC81 TAD Premium Selected  (symmetrisch/balanced)
12AT7 / ECC81 TAD Premium Selected (balanced)
Rich-sounding Reverb Driver - Also Great for HiFi Audio-Systems and Studio Compressors! Low noise tube, selected for best symmetry and balance. A strong driver tube and a wounderfully rich-sounding reverb driver. Also used in the great...

From €29.80 *
Remember Part Number: RT002
Tube Amp Doctor GmbH
RT003-MASTER ECC83-Cz TAD Premium Selected
ECC83-Cz TAD Premium Selected
Emphasize Your Punchy Mids!! 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...

From €29.80 *
Remember Part Number: RT003
Tube Amp Doctor GmbH
RT004 12AT7WC-USA NOS TAD Premium Selected
12AT7WC-USA NOS TAD Premium Selected (balanced)
The Original US-made mil. Grade JAN Version in TAD Premium NOS-Selection quality This tube is used in old Fender amps or hi-fi applications and produces a smooth reverb. It replaces the 6201, E81CC and ECC801. upgrades ECC81 and 12AT7....

From €46.80 *
Remember Part Number: RT004
Tube Amp Doctor GmbH
RT005-MASTER 12AU7A / ECC82 TAD Premium Selected  (symmetrisch/balanced)
12AU7A / ECC82 TAD Premium Selected (balanced)
The Perfect Choice for Stereo Audio Applications - Ideal as a Balanced Driver This TAD 12AU7A / ECC82 has especially strong systems which are selected to provide two symmetrically amplifying triodes - also called "balanced". The perfect...

From €58.20 *
Remember Part Number: RT005
Tube Amp Doctor GmbH
RT006-MASTER 12AX7WA-R TAD Premium Selected
12AX7WA-R TAD Premium Selected
Maintain Your Amp's Original Tone! Very low noise but slightly less gain than a regular 12AX7. Soft highs and edgy, dominant high-mids. Our recommendation when your amp has microphonic issues. This tube is used in many Fender amps made...

From €33.80 *
Remember Part Number: RT006
Tube Amp Doctor GmbH
RT009-MASTER 5751 TAD Premium Selected
5751 TAD Premium Selected
5751 = a 12AX7 with a bit less gain and big plus on tone! Low-noise Tube for Best Clean Tone! The TAD Selected 5751 is our first choice for noticeably improved clarity, smoothness, and a true vintage tone character for most guitar amps!...

From €32.80 *
Remember Part Number: RT009
1 From 24

Tubes - the core of our Love for sound

Vacuum tubes are essential components of amps. They are responsible for the natural sound, open response, and dynamics, being the heart and soul of every guitar sound. We love the genuine, distinctive sound of the vacuum tube - it's clear that as Tube Amp Doctor, we offer a wide range of valves, preamp valves, pentodes, triodes, and more.

Our wide product range offers the right tubes for everyone who is as captivated by the classic guitar sound as we are. In addition to matched tube sets and individual tubes for guitar and bass amps, we naturally also offer transmitting and HiFi tubes!

Our product catalogue - all the tubes you yeed!

We offer a huge selection of amplifier valves:

Preamp tubes

The preamp stage of the tube amp amplifies the small input signal from the guitar (or the pickup) to the necessary level, making it "tangible" for further processing. Preamp valves are double triodes that have a significant impact on the sound of the amplifier. Distortion and natural sound can be influenced by changes in the preamp tubes.

Power valves

The power stage amplifies the processed guitar signal to a level that can drive the connected speakers. In the power stage, power tubes, i.e., pentodes, perform this work under heavy load. Cleanly matched power valves give the sound a natural tone without unduly distorting it.

Rectifiers

Rectifiers are tubes that convert mains voltage and thus influence the sound of the amp. Due to the higher internal resistance, the signal is "weakened," and the amplification appears somewhat softer.

HiFi / triodes / transmitting valves

Not just instrument amplifiers seek to draw their power from vacuum valves. High-quality HiFi amplifiers also utilize the organic and natural sound quality of a tube-based amplification of the input signal.

Through the natural amplification of the signal, the recorded original tracks are reproduced very faithfully - an absolute must for music enthusiasts. From our TAD tubes to Soviet NOS components, we therefore offer our customers a wide selection of different tubes.

High quality for all areas - our tubes

We offer a wide selection of common and exotic vacuum tubes - always focusing on the highest quality of our goods. We test our valves for quality and manufacturing standards. Especially our TAD Premium Tube Sets with precisely matched vacuum valves are scrutinized. Thus, only what truly sounds good reaches our customers - the best sound at full tube!

Buying tubes online - our specialty since 1993

Great sound: That's what we've been passionate about for decades. Over the past years, we've accumulated a vast wealth of experience and stand by our customers with advice and action when it comes to repairing a beloved amplifier or installing new equipment. With our love for music and technical enthusiasm, we provide the necessary know-how for all projects related to sound! We are happy to provide extensive advice on questions or other concerns.

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