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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 €295.80 *
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
RT28 6550C-SVT TAD Premium Matched ( SED 6550C winged -C-)
6550C-SVT TAD Premium Matched ( SED 6550C winged -C-)
TAD 6550C-SVT : a very powerful and dependable choice with TAD Premium Matching. Stock tube of many hi-fi manufacturers and in the legendary Ampeg SVT bass amp. The TAD 6550C-SVT has a very linear and focused sound. Very consistent in...

From €120.00 *
Remember Part Number: RT281
KR Audio
KR-KT88.2 KR Audio KT88  - Paar (2 gematchte Röhren)
KR Audio KT88 - Paar (2 matched tubes)
KRON Audio KT88 factory matched PAIR - KR KT88 Audio-Tube BRAND NEW !!! the very first small test batch of this KR-KT88 had convinced us completely to proudly anounce and present the very best of all KT88 tubes we ever came across in our...

€595.00 *
Remember Part Number: KR-KT88.2
KR Audio
KR-KT88.4 KR Audio KT88  - Quartet (4 gematchte Röhren)
KR Audio KT88 - Quartet (4 matched tubes)
KRON Audio KT88 factory matched QUARTET - KR KT88 Audio-Tube Brandnew version 2023 now as BLACKPLATE with black anodes! Price is for a factory matchted QUARTET

€1,190.00 *
Remember Part Number: KR-KT88.4
Genalex Gold Lion
NN-GL-KT88-MASTER Gold Lion KT88 Genalex
Gold Lion KT88 Genalex
Gold Lion KT88 Genalex

From €88.80 *
Remember Part Number: NN-GL-KT88
Mullard Tubes
NN-M-KT88 Mullard KT88 / Russia
Mullard KT88 / Russia
Remake of the MULLARD KT88 (Russia)

€58.50 *
Remember Part Number: NN-M-KT88
SED Tubes
NN281 SED 6550C Svetlana -C- / Russia
SED 6550C Svetlana -C- / Russia
the good old "winged C" made in St. Petersburg factory DISCONTINUED: out of production since 2012. Available as long as stock lasts only! we highly recommend the TAD 6550A-STR (triple-getter construction like the orignal NOS 6550A GE) as...

€99.00 *
Remember Part Number: NN281
ELECTRO HARMONIX
NN348 EH KT88 Electro Harmonix / Russia
EH KT88 Electro Harmonix
high power KT88 for HiFi, not recommendet for guitar- or bass amps as this particular tube is susceptible to microphonics.

From €61.80 *
Remember Part Number: NN348
Sovtek Tubes
NN381 Sovtek 6550WE / Russia
Sovtek 6550WE
Sovtek 6550WE

From €62.80 *
Remember Part Number: NN381
JJ - Electronic s.r.o.
NN391-MASTER KT88 JJ Electronic
KT88 JJ Electronic
KT88 JJ Electronic

From €57.80 *
Remember Part Number: NN391
JJ - Electronic s.r.o.
NN395 6550 JJ Electronic
6550 JJ Electronic
JJ 6550 JJ Electronic

From €53.80 *
Remember Part Number: NN395
Hint!
SED Tubes
NN441 SED KT88 Svetlana winged  -C- / Russia
SED KT88 Svetlana winged -C- / Russia
the good old "winged C" made in St. Petersburg factory till 2012 a rare find of a modern classic all later makes are not made by Svetlana Electron Devices (SED) in St. Petersburg but at Reflektor factory in Saratov in same factory as...

From €146.20 *
Remember Part Number: NN441
ELECTRO HARMONIX
NN481 EH 6550  Elektro Harmonix / Russia
EH 6550 Electro Harmonix
EH 6550 Electro Harmonix

From €59.80 *
Remember Part Number: NN481
Tung-Sol Electron Tubes
NN922 Tung-Sol KT120 / Russia
Tung-Sol KT120
Tung-Sol KT120, which has a plate dissipation of 60 watts, making it the most powerful tube in the 6550/KT88/KT90 family. A pair of these tubes in push-pull configuration can deliver power levels of 150 or more watts. Due to its huge...

From €87.80 *
Remember Part Number: NN922
Tung-Sol Electron Tubes
NN925 Tung-Sol KT150 / Russia
Tung-Sol KT150 beam power tetrode
Tung-Sol KT150 beam power tetrode manufacturer information: With a massive plate dissipation of 70 watts, the Tung-Sol KT150 is the most powerful octal beam tetrode ever produced. A pair of KT150s can allow an amplifier with a power...

From €114.80 *
Remember Part Number: NN925
Tung-Sol Electron Tubes
NN941 Tung-Sol 6550 / Russia
Tung-Sol 6550 / Russia
Tung-Sol 6550 / Russia

From €67.79 *
Remember Part Number: NN941
ELECTRO HARMONIX
NN991 EH KT90 Electro Harmonix / Russia
EH KT90 Electro Harmonix / Russia
High power KT90 for HiFi, not recommendet for guitar- or bass amps. size: d= 39mm, l= 108mm (without the pins)

From €72.80 *
Remember Part Number: NN991
Psvane & Treasure Audio Tubes
PS2-KT88-T-MII.2 Psvane KT88-T-MII/2 Gematchtes Paar
Psvane KT88-T-MII/2 Matched Pair
The KT88-T-MII/2 Psvane Reference MarkII T-series get shipped as factory matched pair. All Psvane tubes get retested at TAD to ensure the perfect quality even after the long trip from factory to us. the NEW Psvane MKII T-Series: Carbon...

€249.90 *
Remember Part Number: PS2-KT88-T-MII.2
Psvane & Treasure Audio Tubes
PS2-KT88-T-MII.4 Psvane KT88-T-MII/4 Gematchtes QUARTETT
Psvane KT88-T-MII/4 Matched Quartet
The KT88-T-MII/4 Psvane Reference MarkII T-series get shipped as factory matched QUARTET. All Psvane tubes get retested at TAD to ensure the perfect quality even after the long trip from factory to us. the NEW Psvane MKII T-Series:...

€499.80 *
Remember Part Number: PS2-KT88-T-MII.4
Hint!
Tube Amp Doctor GmbH
RT79 TAD KT88-STR BLACKPLATE, Premium Matched
TAD KT88-STR BLACKPLATE, Premium Matched
The TAD KT88-STR BLACKPLATE is a high-end KT88. A timeless classic desgin. Premium Selected & Matched by TAD in Germany. TAD BLACKPLATE characteristics: ⦁ very detailed and defined tone ⦁ natural and relaxed sound characteristics ⦁...

From €92.00 *
Remember Part Number: RT791
General Electric
S6550A-GE 6550A GE  NOS   (USA)
6550A GE NOS (USA)
THE LEGEND: : 6550A General Electric NOS / NIB (USA) aka CV5220, KT88 extremely rare in unused condition from military surplus stocks

From €189.00 *
Remember Part Number: S6550A-GE
Shuguang
SG-KT88-Z Shuguang Black Treasure KT88-Z (Gold-Gitter)
Shuguang Black Treasure KT88-Z (gold grid)
SHUGUANG KT88-Z Black Treasure / gold grid / HPCC coating / Super Alloy the Black Treasure Series has been developped and producted jointly by PSVANE and Shuguang. The KT88-Z tube's construction features gold grid wires and a new...

From €79.80 *
Remember Part Number: SG-KT88-Z
SVETLANA Electron Devices
NN-SV6550C-MASTER SVETLANA -S- 6550C
SVETLANA -S- 6550C
SVETLANA -S- 6550C

From €64.50 *
Remember Part Number: NN-SV6550C
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