Hier steht eine Valvo EL34 zum Verkauf. Die Röhre wurde auf einem Funke W19s mit Gut geprüft. Die Röhren wurde mit 56mA geprüft. Gut beginnt ab 22mA. Zustand bitte den Bildern entnehmen, die Beschriftung kann teilweise verwischt sein. Die Röhren können teilweise schmutzig sein und die pins etwas verbogen sein. Hier biete ich eine Vielzahl an alten Bastel - und Sammelobjekten an. Bitte beachten Sie, dass die Röhren lediglich auf einem Röhrenprüfgerät Funke w19S geprüft worden sind. Deshalb kann ich keine Garantie auf Funktion, Klang, Rauschen oder sonstigen Technische Funktionen in einem Verstärker oder anderen Geräten Garantieren. nach§ 19 UStG kann die MWST nicht ausgewiesen werden.

Hier steht 2 x Valvo EL34 zum Verkauf. Die Röhren wurde auf einem Funke W19s mit Gut geprüft. Die Röhren wurde mit 56mA und 56mA geprüft. Gut beginnt ab 22mA. Zustand bitte den Bildern entnehmen, die Beschriftung kann teilweise verwischt sein. Die Röhren können teilweise schmutzig sein und die pins etwas verbogen sein. Hier biete ich eine Vielzahl an alten Bastel - und Sammelobjekten an. Bitte beachten Sie, dass die Röhren lediglich auf einem Röhrenprüfgerät Funke w19S geprüft worden sind. Deshalb kann ich keine Garantie auf Funktion, Klang, Rauschen oder sonstigen Technische Funktionen in einem Verstärker oder anderen Geräten Garantieren. nach§ 19 UStG kann die MWST nicht ausgewiesen werden.

Here is an awesome single of Amperex EL34 brown base audio tube. Please look at all actual item pictures carefully to know about detail of item. Will be well packed and insured. Amperex Bugle Boy EL34 / Xf4 X91 Tube tested from : Amplitrex AT-1000 Tube 1 : 45% Emis 53% GM Thanks again for looking.

3 ea. of Amperex 6CA7 EL34 tubes with the single halo getters . Tested in a TV7 D/U tube tester at 46/48/50 where 30 is the minimum. Made in Great Britain, all same date codes 24th week 1983. Tubes are in excellent condition, tight bases and no loose particles inside the tubes , Email any questions , shipping USPS priority mail or UPS Ground

=°=Clic ? Mes autres ventes, all my listings >> see my other sales << 2x EL34 RTC & Philipspresumed NOS ; xf4 set made by Mullard Blackburn(one broken box,missing flap)Engraved codes: B6F3 & B9K3 voir photos, see photos and read all !Test results n°1 & n°2 ? B&K747B (GM) 109 % & 113 % (Mostly new EL34 test 110%+ on this tester)------Metrix 310B : Vp: 250V / Vg2: 250V / Vg1: -13,5V (GM) ? 10,7 mA/V & 11.5mA/v (nominal 11) matched I plates result:? 99 mA & 99 mA (expected 100)------B&K747B Dynamic mutual conductance tester for : shorts / grid emission-leakage-gas mutual conductance & life test. Good range of the meter scale in % transconductance starts at 65 up to 120Tubes are guarantied not to be Dead On Arrival and to test as stated in this auction. + PLEASE CHECK OUT MY OTHER AUCTIONS FOR MORE TUBES + Réduction sur la livraison dachats groupés en FRANCE: même prix de port, le plus élevé, quel que soit le nombre dobjets achetés, alors consultez mes autres ventes, MERCI. Envoi soigné garanti - Nhésitez pas à me contacter pour tout renseignement avant denchérir. idem en cas de problème ou derreur dans la description: communiquez, Errare humanum est... *****foreign buyers please note***** I always package my items with care to help insure they will arrive to you safelyYES, I really do combine shipping if you win more than one auction, to save you money on shipping: Please ask all questions before bidding and I will be happy to answer If a problem arises contact me and Ill try to fix the problem, Errare humanum est....

Hier steht 2 x EL34 zum Verkauf. Bei einer Röhre ist der Führungs stift abgebrochen. Die Röhren wurde auf einem Funke W19s mit Gut geprüft. Die Röhren wurde mit 43mA und 44mA geprüft. Gut beginnt ab 22mA. Zustand bitte den Bildern entnehmen, die Beschriftung kann teilweise verwischt sein. Die Röhren können teilweise schmutzig sein und die pins etwas verbogen sein. Hier biete ich eine Vielzahl an alten Bastel - und Sammelobjekten an. Bitte beachten Sie, dass die Röhren lediglich auf einem Röhrenprüfgerät Funke w19S geprüft worden sind. Deshalb kann ich keine Garantie auf Funktion, Klang, Rauschen oder sonstigen Technische Funktionen in einem Verstärker oder anderen Geräten Garantieren. nach§ 19 UStG kann die MWST nicht ausgewiesen werden.

2x Valvo (Mullard) EL34 matched brown tubes Röhren - DD Getter - xf4. Valvo - 84,7 mA / 12,4 mAV Valvo - 83 mA / 11,7 mAV

RARE STRONG MATCHED PAIR OF MULLARD PHILIPS EL34 DD GETTERS WITH WELDED PLATES PLEASE MAKE PAYMENT IMMEDIATELY AS I WILL BE GOING ON HOLIDAY SHORTLY AFTERIF PAYMENT IS NOT RECEIVED IN TIME I WILL NOT BE ABLE TO SHIP UNTIL THE 15TH AUGUST - BY BIDDING ON THIS AUCTION YOU ACCEPT THESE CONDITIONS ONE HAS THE CODE Xf4 L1J FROM OCTOBER 1961, THE OTHER THE CODE IS NOT VISIBLE BUT IDENTICAL TUBES BOTH LOOK LIKE THEY HAVE HAD VERY LITTLE USE , IF AT ALL ??AVO VCM163 TESTED READINGS TUBE 1 - Ia 92 gm 10.8 TUBE 2 - Ia 94 gm 10.9 100% = Ia 75 gm 11.0 ? PLEASE SEE MY OTHER AUCTIONS ?

I have 1 Excellent vintage Amperex XF4 DD getter EL34 tube.This tube test 41 where 32 is the minimum good and new tubes test 48 to 50 on are tv7 tube tester.

=°=Clic ? Mes autres ventes, all my listings >> see my other sales << 2x EL34 RTC & Philipspresumed NOS ; xf4 set made by Mullard Blackburn(one broken box,missing flap)Engraved codes: B6F3 & B9K3 voir photos, see photos and read all !Test results n°1 & n°2 ? B&K747B (GM) 109 % & 113 % (Mostly new EL34 test 110%+ on this tester)------Metrix 310B : Vp: 250V / Vg2: 250V / Vg1: -13,5V (GM) ? 10,7 mA/V & 11.5mA/v (nominal 11) matched I plates result:? 99 mA & 99 mA (expected 100)------B&K747B Dynamic mutual conductance tester for : shorts / grid emission-leakage-gas mutual conductance & life test. Good range of the meter scale in % transconductance starts at 65 up to 120Tubes are guarantied not to be Dead On Arrival and to test as stated in this auction. + PLEASE CHECK OUT MY OTHER AUCTIONS FOR MORE TUBES + Réduction sur la livraison dachats groupés en FRANCE: même prix de port, le plus élevé, quel que soit le nombre dobjets achetés, alors consultez mes autres ventes, MERCI. Envoi soigné garanti - Nhésitez pas à me contacter pour tout renseignement avant denchérir. idem en cas de problème ou derreur dans la description: communiquez, Errare humanum est... *****foreign buyers please note***** I always package my items with care to help insure they will arrive to you safelyYES, I really do combine shipping if you win more than one auction, to save you money on shipping: Please ask all questions before bidding and I will be happy to answer If a problem arises contact me and Ill try to fix the problem, Errare humanum est....

( LOT #2) Tested NOS Matched Pair MullardBlackburn Factory (Codes xf4 B9E3) EL34 6CA7 O Getter Amplifier TubeTV-7/u Tested!! Priced to sell! Good MEASUREMENTS across all 6 Tv-7/u Tube testers!!!! Tested to be in guaranteed working conditionI tested these on a High Quality Professonal Military Calibrated Hickok TV-7/U Testers: TUBEs TEST RESULTs: TUBE #1: 48 or (GM=6000/30.1ma) - {Minimum Rating of (30 or GM=3750) for TV-7 Testers are equal to 65% of average new ratings.}TUBE #2: 46 or (GM=5750/29.6ma) - {Minimum Rating of (30 or GM=3750) for TV-7 Testers are equal to 65% of average new ratings.} *** I WILL COMBINE SHIPPING COSTs ON MY ITEMS FOR SALE - SAVE BIG $$ !!! If you have Questions or Comments contact me on eBay Check out the photos! TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES! I Combine ShippingBefore You Pay. I accept PayPal and Postal M O.Please see click to enlarge photos for condition and quality.Check out My Other Items For Sale!WILL BE SHIPPED OUT FAST! Before bidding please read my shipping and return policy. I WILL COMBINE SHIPPING COST ON MY ITEMS!!! NOTE: International buyers - THE BUYER IS RESPONSIBLE FOR SHIPPING FEES. INTERNATIONAL BIDS WELCOME. I WONT CHANGE DECLARED VALUE ON CUSTOM FORMS AND INTERNATIONAL BUYERS ARE RESPONSIBLE FOR ALL TAXES, CUSTOM FEES, and additional shipping fees. ANY RETURN WILL BE ACCEPTED BUT BUYER WILL PAY SHIPPING FEES AND I WILL NOT REFUND ANY SHIPPING FEES.*TESTED ON Calibrated HICKOK TV-7 B/U*{Minimum Ratings for TV-7 Testers are equal to 65% of average new ratings.}ALL tubes will be ran through a Daniel Nelson calibrated HICKOK TV-7 B/U for a full mutual conductance test. This is a world class tester that is calibrated by the Hickok doctor. Its test results are dead on and you can buy with confidence. If you want to know what the exact Gm rating of the tube is please message me. My Return Policy: Will not accept returns for reasons such as ordered the wrong item, change mind, not what I thought It was, wrong color ordered, item ordered.

( LOT #2) Tested NOS Matched Pair MullardBlackburn Factory (Codes xf4 B9E3) EL34 6CA7 O Getter Amplifier TubeTV-7/u Tested!! Priced to sell! Good MEASUREMENTS across all 6 Tv-7/u Tube testers!!!! Tested to be in guaranteed working conditionI tested these on a High Quality Professonal Military Calibrated Hickok TV-7/U Testers: TUBEs TEST RESULTs: TUBE #1: 48 or (GM=6000/30.1ma) - {Minimum Rating of (30 or GM=3750) for TV-7 Testers are equal to 65% of average new ratings.}TUBE #2: 46 or (GM=5750/29.6ma) - {Minimum Rating of (30 or GM=3750) for TV-7 Testers are equal to 65% of average new ratings.} *** I WILL COMBINE SHIPPING COSTs ON MY ITEMS FOR SALE - SAVE BIG $$ !!! If you have Questions or Comments contact me on eBay Check out the photos! TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES! I Combine ShippingBefore You Pay. I accept PayPal and Postal M O.Please see click to enlarge photos for condition and quality.Check out My Other Items For Sale!WILL BE SHIPPED OUT FAST! Before bidding please read my shipping and return policy. I WILL COMBINE SHIPPING COST ON MY ITEMS!!! NOTE: International buyers - THE BUYER IS RESPONSIBLE FOR SHIPPING FEES. INTERNATIONAL BIDS WELCOME. I WONT CHANGE DECLARED VALUE ON CUSTOM FORMS AND INTERNATIONAL BUYERS ARE RESPONSIBLE FOR ALL TAXES, CUSTOM FEES, and additional shipping fees. ANY RETURN WILL BE ACCEPTED BUT BUYER WILL PAY SHIPPING FEES AND I WILL NOT REFUND ANY SHIPPING FEES.*TESTED ON Calibrated HICKOK TV-7 B/U*{Minimum Ratings for TV-7 Testers are equal to 65% of average new ratings.}ALL tubes will be ran through a Daniel Nelson calibrated HICKOK TV-7 B/U for a full mutual conductance test. This is a world class tester that is calibrated by the Hickok doctor. Its test results are dead on and you can buy with confidence. If you want to know what the exact Gm rating of the tube is please message me. My Return Policy: Will not accept returns for reasons such as ordered the wrong item, change mind, not what I thought It was, wrong color ordered, item ordered.

Tested on a fully restored TV7-DU, by Dan Nelson, pictures of evidence for this included in the listing. It was restored and calibrated on October 21st 2021. Tubes are tested for shorts. PC= Plate Current DC= Date Code Please note, TV7 data minimum is equal to 60%. For example, (insert model number here) min value 60. If the tube tests at minimum 60, that is equal to 60%. The number over (/) is the minimum test data result as described in the TV7 DU tube testing manual. So 60/ (min) 60 = 60% tests NOS DC= xf4 b7l3. 2. = xf4 b8a4 1. 50.5/30 PC= 38.3 2. 49.3/30 PC= 36.1 I mark all my tubes, so please dont waste your time seeking to send me back your old dead tubes. All testers read differently. I have sought to have my tester as accurate as possible. I will not be giving partial refunds because you have received different test result. All tubes will be shipped well, an example of how I pack is pictured in the listing. (obviously these tubes are not included) I wont be lying on a customs form I combine shipping. If the tubes are of significant value, the postage will be extra due to insurance.

( LOT #2) Tested NOS Matched Pair MullardBlackburn Factory (Codes xf4 B9E3) EL34 6CA7 O Getter Amplifier TubeTV-7/u Tested!! Priced to sell! Good MEASUREMENTS across all 6 Tv-7/u Tube testers!!!! Tested to be in guaranteed working conditionI tested these on a High Quality Professonal Military Calibrated Hickok TV-7/U Testers: TUBEs TEST RESULTs: TUBE #1: 48 or (GM=6000/30.1ma) - {Minimum Rating of (30 or GM=3750) for TV-7 Testers are equal to 65% of average new ratings.}TUBE #2: 46 or (GM=5750/29.6ma) - {Minimum Rating of (30 or GM=3750) for TV-7 Testers are equal to 65% of average new ratings.} *** I WILL COMBINE SHIPPING COSTs ON MY ITEMS FOR SALE - SAVE BIG $$ !!! If you have Questions or Comments contact me on eBay Check out the photos! TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES! I Combine ShippingBefore You Pay. I accept PayPal and Postal M O.Please see click to enlarge photos for condition and quality.Check out My Other Items For Sale!WILL BE SHIPPED OUT FAST! Before bidding please read my shipping and return policy. I WILL COMBINE SHIPPING COST ON MY ITEMS!!! NOTE: International buyers - THE BUYER IS RESPONSIBLE FOR SHIPPING FEES. INTERNATIONAL BIDS WELCOME. I WONT CHANGE DECLARED VALUE ON CUSTOM FORMS AND INTERNATIONAL BUYERS ARE RESPONSIBLE FOR ALL TAXES, CUSTOM FEES, and additional shipping fees. ANY RETURN WILL BE ACCEPTED BUT BUYER WILL PAY SHIPPING FEES AND I WILL NOT REFUND ANY SHIPPING FEES.*TESTED ON Calibrated HICKOK TV-7 B/U*{Minimum Ratings for TV-7 Testers are equal to 65% of average new ratings.}ALL tubes will be ran through a Daniel Nelson calibrated HICKOK TV-7 B/U for a full mutual conductance test. This is a world class tester that is calibrated by the Hickok doctor. Its test results are dead on and you can buy with confidence. If you want to know what the exact Gm rating of the tube is please message me. My Return Policy: Will not accept returns for reasons such as ordered the wrong item, change mind, not what I thought It was, wrong color ordered, item ordered.

=°=Clic ? Mes autres ventes, all my listings >> see my other sales << 2x EL34 RTC & Philipspresumed NOS ; xf4 set made by Mullard Blackburn(one broken box,missing flap)Engraved codes: B6F3 & B9K3 voir photos, see photos and read all !Test results n°1 & n°2 ? B&K747B (GM) 109 % & 113 % (Mostly new EL34 test 110%+ on this tester)------Metrix 310B : Vp: 250V / Vg2: 250V / Vg1: -13,5V (GM) ? 10,7 mA/V & 11.5mA/v (nominal 11) matched I plates result:? 99 mA & 99 mA (expected 100)------B&K747B Dynamic mutual conductance tester for : shorts / grid emission-leakage-gas mutual conductance & life test. Good range of the meter scale in % transconductance starts at 65 up to 120Tubes are guarantied not to be Dead On Arrival and to test as stated in this auction. + PLEASE CHECK OUT MY OTHER AUCTIONS FOR MORE TUBES + Réduction sur la livraison dachats groupés en FRANCE: même prix de port, le plus élevé, quel que soit le nombre dobjets achetés, alors consultez mes autres ventes, MERCI. Envoi soigné garanti - Nhésitez pas à me contacter pour tout renseignement avant denchérir. idem en cas de problème ou derreur dans la description: communiquez, Errare humanum est... *****foreign buyers please note***** I always package my items with care to help insure they will arrive to you safelyYES, I really do combine shipping if you win more than one auction, to save you money on shipping: Please ask all questions before bidding and I will be happy to answer If a problem arises contact me and Ill try to fix the problem, Errare humanum est....

rohre lampe röhre tsf ??? ??? EL34 = 6CA7 PHILIPS – 1 paio di valvole EL34 rohre lampe röhre tsf ??? ??? Prodotto vintage, BASE MARRONE Testato su Hickok 532 Risultati: Tubo A: 6.000 MICRHOMOS Tubo B: 6.000 MICRHOMOS I codici sui tubi sono: Xf5 L2F1 Xf4 L1F Codice: xf4/5 Significano che sono Double DD, base bachelite marrone, PRODOTTE tra il 1957 e il 1962 Identificate da: - DD getter - bakkelite base marrone Commento: Abbastanza raro - Ottimo suono. Forse il mio preferito!! Secondo il sito tube-classics.de Considerata 1 coppia sposata di valvole Miniwatt EL34 = 6CA7 PHILIPS Prodotto con garanzia e fattura Una delle valvole ha la serigrafia, laltra la serigrafia dove cera scritto EL34 Miniwatt è già stata spenta. Valvole quasi 60 anni. È comune e le valvole Miniwatt escono dalla serigrafia. Hanno usato un GIZ come linchiostro e quindi si perde con lattrito quando lo togliamo dalla scatola o lo tocchiamo con il dito sopra la scritta. Risulta molto facile da scrivere.

rohre lampe röhre tsf Testbericht EL34 = 6CA7 PHILIPS – 1 Paar EL34-Ventile rohre lampe röhre tsf Testbericht Vintage-Produkt, BRAUNE BASIS Getestet auf Hickok 532 Ergebnisse: Rohr A: 6.000 MICRHOMOS Rohr B: 6,0 00 MICRHOMOS Die Codes auf den Röhren sind: xf5 L2F1 Vielleicht mein Favorit!! Laut der Website tube-classics.de handelt es sich um 1 verheiratetes Ventilpaar Miniwatt EL34 = 6CA7 PHILIPS Produkt mit Garantie und Rechnung Eines der Ventile hat den Siebdruck, bei dem anderen ist der Siebdruck dort, wo EL34 Miniwatt steht, bereits erloschen. Ventile fast 60 Jahre alt. Es ist üblich, dass Miniwatt-Ventile im Siebdruckverfahren hergestellt werden. Sie verwendeten eine GIZ-ähnliche Tinte, die durch Reibung verloren geht, wenn wir sie aus der Schachtel nehmen oder mit dem Finger die Oberseite der Schrift berühren. Es lässt sich sehr leicht schreiben.

rohre lampe röhre tsf ??? ??? EL34 = 6CA7 PHILIPS – 1 par de válvulas EL34 rohre lampe röhre tsf ??? ??? Producto antiguo, BASE MARRÓN Probado en Hickok 532 Hallazgos: Tubo A: 6,000 MICR Tubo HOMOS B: 6.000 MICRHOMOS Los códigos de los tubos son: Xf5 L2F1 Xf4 L1F Código: xf4/5 Quieren decir que son Doble DD, base de baquelita marrón, PRODUCIDOS entre 1957 y 1962 Identificados por: - DD getter - Base de baquelita marrón Comentario: Bastante raro - Gran sonido. Quizás mi favorito!! Según el sitio web tube-classics.de Considerado 1 par casado de válvulas Miniwatt EL34 = 6CA7 PHILIPS Producto con garantía y factura Una de las válvulas tiene la serigrafía, la otra la serigrafía donde estaba escrito EL34 Miniwatt ya se apagó. Válvulas de casi 60 años. Es común que en las válvulas Miniwatt se apague la serigrafía. Usaron una tinta tipo GIZ y por eso se pierde con la fricción cuando la sacamos de la caja o la tocamos con el dedo encima de la escritura. Sale muy fácil de escribir.

rohre lampe röhre tsf ??? ??? EL34 = 6CA7 PHILIPS – 1 paire de lampes EL34 rohre lampe röhre tsf ??? ??? Produit vintage, BASE MARRON Testé sur Hickok 532 Résultats : Tube A : Tube 6 000 MICRHOMOS B : 6 000 MICRHOMOS Les codes sur les tubes sont : Xf5 L2F1 Xf4 L1F Code : xf4/5 Ils signifient quils sont Double DD, base en bakélite brune, PRODUITS entre 1957 et 1962 Identifiés par : - DD getter - Brown Base bakkelite Commentaire : Assez rare - Excellent son. Peut-être mon préféré !! Daprès le site tube-classics.de Considéré comme 1 paire de vannes mariées Miniwatt EL34 = 6CA7 PHILIPS Produit avec garantie et facture Lune des vannes a la sérigraphie, lautre la sérigraphie où il était écrit EL34 Miniwatt a déjà été éteinte. Vannes presque 60 ans. Cest courant et les vannes Miniwatt la sérigraphie séteignent. Ils ont utilisé une encre de type GIZ et elle se perd donc par frottement lorsque nous la retirons de la boîte ou que nous la touchons avec notre doigt sur lécriture. Il sort très facile à écrire.

rohre lampe röhre tsf ??? ??? EL34 = 6CA7 PHILIPS – 1 pair of EL34 valves rohre lampe röhre tsf ??? ??? Vintage product, BROWN BASE Tested on Hickok 532 Findings: Tube A: 6,000 MICRHOMOS Tube B: 6,000 MICRHOMOS The codes on the tubes are: Xf5 L2F1 Xf4 L1F Code: xf4/5 They mean they are Double DD, brown Bakelite base, PRODUCED between 1957 and 1962 Identified by: - DD getter - Brown Base bakkelite Comment: Quite rare - Great sound. Maybe my favorite!! According to the website tube-classics.de Considered 1 married pair of valves Miniwatt EL34 = 6CA7 PHILIPS Product with warranty and invoice One of the valves has the screen printing, the other the screen printing where it was written EL34 Miniwatt has already been extinguished. Valves almost 60 years old. It is common and Miniwatt valves the screen printing go out. They used a GIZ like ink and so it gets lost with friction when we remove it from the box or touch it with our finger on top of the writing. It comes out very easy to write.

rohre lampe röhre tsf ??? ??? EL34 = 6CA7 PHILIPS – 1 pair of EL34 valves rohre lampe röhre tsf ??? ??? Vintage product, BROWN BASE Tested on Hickok 532 Findings: Tube A: 6,000 MICRHOMOS Tube B: 6,000 MICRHOMOS The codes on the tubes are: Xf5 L2F1 Xf4 L1F Code: xf4/5 They mean they are Double DD, brown Bakelite base, PRODUCED between 1957 and 1962 Identified by: - DD getter - Brown Base bakkelite Comment: Quite rare - Great sound. Maybe my favorite!! According to the website tube-classics.de Considered 1 married pair of valves Miniwatt EL34 = 6CA7 PHILIPS Product with warranty and invoice One of the valves has the screen printing, the other the screen printing where it was written EL34 Miniwatt has already been extinguished. Valves almost 60 years old. It is common and Miniwatt valves the screen printing go out. They used a GIZ like ink and so it gets lost with friction when we remove it from the box or touch it with our finger on top of the writing. It comes out very easy to write.

Offered is a quartet of Xf4 type EL34s, Philips and Valvo branded but all made in UK by Mullard Blackburn, between 1975 and 1980.Pentodes were invented by Philips; the Xf4 type made in Blackburn was the pinnacle of the British EL34’s saga and the last model to be manufactured by the Philips-Mullard-Valvo group. Due to its stapled plate, it has the same musicality but it’s a little less tolerant to overheating and it asks for a little more attention in biasing, respect to the classic Xf2. Nevertheless, thanks to both its higher and lower mica spacers whose four dents directly couple with the glass envelope, its structure minimizes noises and feedbacks in the high power guitar and bass amplifiers, that is the main application they were intended for, during the late seventies.Tubes show full halo getters and they were positively tested for emissions, transconductances and grid currents with a Metrix U61B: two tubes had been previously overheated for a short time, but they passed all the functionality tests. A stability and sound quality test was also performed on a Marshall guitar head amp.

( LOT #2) Tested NOS Matched Pair MullardBlackburn Factory (Codes xf4 B9E3) EL34 6CA7 O Getter Amplifier TubeTV-7/u Tested!! Priced to sell! Good MEASUREMENTS across all 6 Tv-7/u Tube testers!!!! Tested to be in guaranteed working conditionI tested these on a High Quality Professonal Military Calibrated Hickok TV-7/U Testers: TUBEs TEST RESULTs: TUBE #1: 48 or (GM=6000/30.1ma) - {Minimum Rating of (30 or GM=3750) for TV-7 Testers are equal to 65% of average new ratings.}TUBE #2: 46 or (GM=5750/29.6ma) - {Minimum Rating of (30 or GM=3750) for TV-7 Testers are equal to 65% of average new ratings.} *** I WILL COMBINE SHIPPING COSTs ON MY ITEMS FOR SALE - SAVE BIG $$ !!! If you have Questions or Comments contact me on eBay Check out the photos! TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES! I Combine ShippingBefore You Pay. I accept PayPal and Postal M O.Please see click to enlarge photos for condition and quality.Check out My Other Items For Sale!WILL BE SHIPPED OUT FAST! Before bidding please read my shipping and return policy. I WILL COMBINE SHIPPING COST ON MY ITEMS!!! NOTE: International buyers - THE BUYER IS RESPONSIBLE FOR SHIPPING FEES. INTERNATIONAL BIDS WELCOME. I WONT CHANGE DECLARED VALUE ON CUSTOM FORMS AND INTERNATIONAL BUYERS ARE RESPONSIBLE FOR ALL TAXES, CUSTOM FEES, and additional shipping fees. ANY RETURN WILL BE ACCEPTED BUT BUYER WILL PAY SHIPPING FEES AND I WILL NOT REFUND ANY SHIPPING FEES.*TESTED ON Calibrated HICKOK TV-7 B/U*{Minimum Ratings for TV-7 Testers are equal to 65% of average new ratings.}ALL tubes will be ran through a Daniel Nelson calibrated HICKOK TV-7 B/U for a full mutual conductance test. This is a world class tester that is calibrated by the Hickok doctor. Its test results are dead on and you can buy with confidence. If you want to know what the exact Gm rating of the tube is please message me. My Return Policy: Will not accept returns for reasons such as ordered the wrong item, change mind, not what I thought It was, wrong color ordered, item ordered.

EL34 MULLARD VALVO VALUE - CODE Xf4 BBf2 für Röhrenverstärker.