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6550 and beam Power tetrodes KT88, KT90, KT120, KT150, KT170 Unless otherwise specified, these are matched in-house at BTB with an anode voltage of 500 volts

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KT88 S4A Carbon audio tube handselektiertes Quartett

KT88 S4A Carbon audio tube handselektiertes Quartett

Octal K8A 8-Pin tube-valve-baseThe Carbon series pushs out the Maximum in details, 3D Room, low THDIt is the dot on the "i", mostly better than G.E.C. or TFK, check it outIt is extra handselected by BTB for best parameters, Audio and THDS4A ® "Selected For Audio" is a registered Trademark by BTB

€379.80

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550C S4A-Carbon Quad tubes handselektiertes Quartett

6550C S4A-Carbon Quad tubes handselektiertes Quartett

6550-C Octal K8A 8-Pin tube-valve-baseThe Carbon series pushs out the Maximum in details, 3D Room, low THDIt is the dot on the "i", mostly better than G.E.C. or TFK, check it outIt is extra handselected by BTB for best parameters, Audio and THDS4A ® "Selected For Audio" is a registered Trademark by BTB

€299.90

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550WE Sovtek Russia tube robuste preiswerte 6550 Röhre

6550WE Sovtek Russia tube robuste preiswerte 6550 Röhre

Octal K8A 8-Pin basethe best price rate for Musical Amps like Ampeg SVTheight:101mm-socket diameter:43mm-bulb diameter:47mm (info can variy!)

€52.90

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550WE Pair Sovtek tubes Röhren BTB matched Paar

6550WE Pair Sovtek tubes Röhren BTB matched Paar

Octal K8A 8-Pin basethe best price rate for Musical Amps like Ampeg SVTheight:101mm-socket diameter:43mm-bulb diameter:47mm (info can variy!)

€106.95

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

KT88 C Pair S4A Carbon Audio handselektiertes Paar

KT88 C Pair S4A Carbon Audio handselektiertes Paar

Octal K8A 8-Pin tube-valve-baseThe Carbon series pushs out the Maximum in details, 3D Room, low THDIt is the dot on the "i", mostly better than G.E.C. or TFK, check it outIt is extra handselected by BTB for best parameters, Audio and THDS4A ® "Selected For Audio" is a registered Trademark by BTB

€189.90

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550WE Sovtek Quad tubes Röhren BTB matched Quartett

6550WE Sovtek Quad tubes Röhren BTB matched Quartett

Octal K8A 8-Pin basethe best price rate for Musical Amps like Ampeg SVTheight:101mm-socket diameter:43mm-bulb diameter:47mm (info can variy!)

€213.90

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550WE Sovtek tubes Russia Röhren BTB matched Sextett

6550WE Sovtek tubes Russia Röhren BTB matched Sextett

Octal K8A 8-Pin basethe best price rate for Musical Amps like Ampeg SVTheight:101mm-socket diameter:43mm-bulb diameter:47mm (info can variy!)

€318.00

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550C Pair S4A Carbon tubes handselektiertes Paar

6550C Pair S4A Carbon tubes handselektiertes Paar

6550-C Octal K8A 8-Pin tube-valve-baseThe Carbon series pushs out the Maximum in details, 3D Room, low THDIt is the dot on the "i", mostly better than G.E.C. or TFK, check it outIt is extra handselected by BTB for best parameters, Audio and THDS4A ® "Selected For Audio" is a registered Trademark by BTB

€149.95

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550C S4A Carbon audio tube handselektierte Audio Röhre

6550C S4A Carbon audio tube handselektierte Audio Röhre

Octal K8A 8-Pin tube-valve-brown-base-baseThe Carbon series pushs out the Maximum in details, 3D Room, low THDIt is the dot on the "i", mostly better than G.E.C. or TFK, check it outIt is extra handselected by BTB for best parameters, Audio and THDS4A ® "Selected For Audio" is a registered Trademark by BTB

€73.80

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550JJ Red Label Power tube 35W Röhre made in SK - EU

6550JJ Red Label Power tube 35W Röhre made in SK - EU

Octal K8A 8-Pin basewarm and fat sound, good for HiFi and class -A- single End Ampsheight:102mm-socket diameter:45mm-bulb diameter:44mm (info can variy!)

€52.80

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550JJ Pair Red Label tubes Röhren BTB matched Paar

6550JJ Pair Red Label tubes Röhren BTB matched Paar

Octal K8A 8-Pin basewarm sound, good for HiFi and class -A- single End Ampsheight:102mm-socket diameter:45mm-bulb diameter:44mm (info can variy!)

€99.80

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550JJ Red Label Quad tubes Röhren BTB matched Quartett

6550JJ Red Label Quad tubes Röhren BTB matched Quartett

Octal K8A 8-Pin basewarm sound, good for HiFi and class -A- single End Ampsheight:102mm-socket diameter:45mm-bulb diameter:44mm (info can variy!)

€198.80

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550JJ Red Label Power tube Röhren BTB matched Sextett

6550JJ Red Label Power tube Röhren BTB matched Sextett

Octal K8A 8-Pin basewarm sound, good for HiFi and class -A- single End Ampsheight:102mm-socket diameter:45mm-bulb diameter:44mm (info can variy!)

€309.80

incl. VAT plus shipping costs

Delivery time: ca. 1 - 3 days

6550 Premium Röhren S4GB tubes handselected for Guitar&Basses

6550 Premium Röhren S4GB tubes handselected for Guitar&Basses

Octal K8A 8-Pin tube-valve-baseThe Highgrade 6550 for all Guitar and especially Bass AmpsThis tube has a good Power output and is Highgrade ratedThe tube is handselected in GermanyS4GB ® "Selected For Guitar & Basses" is a registered Trademark by BTBheight:101mm-socket diameter:43mm-bulb diameter:47mm (info can variy!)

€49.80

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550 Premium Röhren S4GB tubes Röhren BTB matched Pair

6550 Premium Röhren S4GB tubes Röhren BTB matched Pair

Octal K8A 8-Pin tube-valve-baseThe Highgrade 6550 for all Guitar and especially Bass AmpsThis tube has a good Power output and is Premium matchedThe tube is handselected in GermanyS4GB ® "Selected For Guitar & Basses" is a registered Trademark by BTBheight:101mm-socket diameter:43mm-bulb diameter:47mm (info can variy!)

€99.90

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550 Premium S4GB Quad Röhren BTB matched Quartett

6550 Premium S4GB Quad Röhren BTB matched Quartett

Octal K8A 8-Pin tube-valve-baseThe Highgrade 6550 for all Guitar and especially Bass AmpsThis tube has a good Power output and is Premium matchedThe tube is handselected in GermanyS4GB ® "Selected For Guitar & Basses" is a registered Trademark by BTBheight:101mm-socket diameter:43mm-bulb diameter:47mm (info can variy!)

€199.90

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550 Premium Röhren S4GB tubes matched Sextett

6550 Premium Röhren S4GB tubes matched Sextett

Octal K8A 8-Pin tube-valve-baseThe Highgrade 6550 for all Guitar and especially Ampeg © SVT Bass AmpsThis tube has a good Power output and is Premium matchedThe tube is handselected in GermanyS4GB ® "Selected For Guitar & Basses" is a registered Trademark by BTBheight:101mm-socket diameter:43mm-bulb diameter:47mm (info can variy!)

€249.90

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550EH coke bottle tube Electro Harmonix tube

6550EH coke bottle tube Electro Harmonix tube

6550EH - 6550 EH - Electro HarmonixOctal K8A 8-Pin basemid price rate - for HiFi and Musical Amps - tendence warm soundheight:106mm-socket diameter:43mm-bulb diameter:53mm (info can variy!)

€57.20

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550EH Electro Harmonix tube Röhren BTB matched Pair

6550EH Electro Harmonix tube Röhren BTB matched Pair

Octal K8A 8-Pin basemid price rate - for HiFi and Musical Amps - tendence warm soundheight:106mm-socket diameter:43mm-bulb diameter:53mm (info can variy!)

€119.90

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550 EH Electro Harmonix Quad Röhren BTB matched Quartett

6550 EH Electro Harmonix Quad Röhren BTB matched Quartett

Octal K8A 8-Pin basemid price rate - for HiFi and Musical Amps - tendence warm soundheight:106mm-socket diameter:43mm-bulb diameter:53mm (info can variy!)

€238.00

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550EH Electro Harmonix tube Röhren BTB matched Sextett

6550EH Electro Harmonix tube Röhren BTB matched Sextett

Octal K8A 8-Pin basemid price rate - for HiFi and Musical Amps - tendence warm soundheight:106mm-socket diameter:43mm-bulb diameter:53mm (info can variy!)

€355.00

incl. VAT plus shipping costs

Delivery time: ca. 1 - 3 days

6550 TungSol (RU) Power Tube Röhre made in Russia 6550TS

6550 TungSol (RU) Power Tube Röhre made in Russia 6550TS

#Octal K8A 8-Pin basestyle as NOS GE´s and other US Brands - neutral sound - good price rateheight:97mm-socket diameter:43mm-bulb diameter:52mm (info can variy!)

€59.00

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550 Tung-Sol (RU) Power Tubes Röhren BTB matched Pair

6550 Tung-Sol (RU) Power Tubes Röhren BTB matched Pair

Octal K8A 8-Pin base 6550TSstyle as NOS GE´s and other US Brands - neutral sound - good price rateheight:97mm-socket diameter:43mm-bulb diameter:52mm (info can variy!)

€117.80

incl. VAT plus shipping costs

Delivery time: ca. 1 - 5 days

6550 Tung-Sol Quad Power tubes Röhren BTB matched Quartett

6550 Tung-Sol Quad Power tubes Röhren BTB matched Quartett

Octal K8A 8-Pin basestyle as NOS GE´s and other US Brands - neutral sound - good price rateheight:97mm-socket diameter:43mm-bulb diameter:52mm (info can variy!)

€234.80

incl. VAT plus shipping costs

Delivery time: ca. 1 - 3 days

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