tube électronique (le tube HF94 est apparu dans les années 50) pentode RF/IF, chauffage indirect 12,6 V 0,15 A continuité du filament, isolation des électrodes et émissivité des cathodes testées à laide dun lampemètre TC-2 Certainement neuf car dans son emballage dorigine (non scellé) et aucune trace dutilisation. Petits caractères : 6628 Au Ce tube se trouve à Bovesse (entre Namur et Gembloux) Si vous connaissez un mode dexpédition qui vous convient mieux que celui proposé (moins cher, plus sûr ou plus commode), prévenez-moi AVANT de payer votre achat pour que vous envoie une facture corrigée. Exemple : livraison dans un point denlèvement Mondial Relay dun pays limitrophe de la Belgique.

Valvola 12au6 Testata ok

Valvola 12au6 Testata ok

5x Telefunken Ulm <> 12AU6 / HF94 / CV1961, In OriginalverpackungIdentische Herstellungscodes: U 1200701Siehe Bild Die Röhren sind neu und originalverpackt Siehe Bilder Ich verkaufe die Röhren dennoch ausdrücklich als ungetestet Und auf Grund des Alters ohne Garantie auf Funktion und schließe einen Umtausch aus. Für Versand außerhalb der EU erfragen Sie bitte die Versandkosten

5x Telefunken Ulm <> 12AU6 / HF94 / CV1961, In OriginalverpackungIdentische Herstellungscodes: U 1200701Siehe Bild Die Röhren sind neu und originalverpackt Siehe Bilder Ich verkaufe die Röhren dennoch ausdrücklich als ungetestet Und auf Grund des Alters ohne Garantie auf Funktion und schließe einen Umtausch aus. Für Versand außerhalb der EU erfragen Sie bitte die Versandkosten

Röhre 12AU6WB von Telefunken Ungebraucht in OVP / NOS Die Röhre ist teils angelaufen / angestaubt und die OVP hat Lagerspuren Zur weiteren Beschreibung schauen Sie sich bitte die Bilder oben an. Zum genauen Betrachten können sie diese auch vergrößern. (Helle Stellen auf den Bildern sind nur Lichtreflexe) Wichtiges zu Ihrem Kauf: Sollte es zu irgendwelchen Problemen kommen, schreiben Sie mir bitte eine Nachricht, ich kümmere mich dann umgehend um eine Lösung. Wenn Sie Ihren Artikel erhalten haben, würde ich mich sehr über eine positive Bewertung freuen. Falls Sie zufrieden waren, geben Sie mir bitte auch 5 Sterne bei den detaillierten Bewertungen. Alle meine Artikel werden als versichertes Päckchen/Paket versendet. Papier und flache Kleinteile versende ich als Einschreiben. Sollten Sie beim Versand einen anderen Wunsch haben, geben Sie mir bitte Bescheid. Bezahlung Zahlungsmöglichkeiten: (Daten jeweils bei Ebay hinterlegt) Überweisung Barzahlung bei Übergabe PayPal Versandkosten nach Vertragsabschluß Bei Käufen aus Deutschland sende ich Ihnen nach Auktionsende keine gesonderte Zahlungsaufforderung, nutzen Sie bitte einfach die Kaufabwicklung über Ebay. Bei Käufen aus dem Ausland sende ich Ihnen innerhalb eines Tages eine Zahlungsaufforderung mit den jeweiligen Versandkosten via Ebay zu. Eine Barzahlung und Abholung der Ware ist möglich und erfolgt nach telefonischer und schriftlicher Terminsvereinbarung. (Wird in der Artikelbeschreibung kostenloser Versand angegeben, werden Ihnen für den jeweiligen Artikel natürlich keine Versandkosten berechnet) Die Versendung erfolgt über Hermes (nationaler oder internationaler Versand, jedoch nur EU) oder DHL (internationaler Versand, außerhalb der EU).

Vintage USED Vacuum Tube as shown in the photos. Tube tests GOOD on my Test-O-Matic tube tester. FREE US SHIPPING...INTERNATIONAL SHIPPING AVAILABLE 20% DISCOUNT ON ADDITIONAL TUBES WHEN PURCHAED TOGETHER Please see my other auctions for more NOS and tested used tubes.....Thanks!

Konvolut 7x Röhre Telefunken 12AU6 Alle ungebraucht in OVP / NOS Zur weiteren Beschreibung schauen Sie sich bitte die Bilder oben an. Zum genauen Betrachten können sie diese auch vergrößern. (Helle Stellen auf den Bildern sind nur Lichtreflexe) Wichtiges zu Ihrem Kauf: Sollte es zu irgendwelchen Problemen kommen, schreiben Sie mir bitte eine Nachricht, ich kümmere mich dann umgehend um eine Lösung. Wenn Sie Ihren Artikel erhalten haben, würde ich mich sehr über eine positive Bewertung freuen. Falls Sie zufrieden waren, geben Sie mir bitte auch 5 Sterne bei den detaillierten Bewertungen. Alle meine Artikel werden als versichertes Päckchen/Paket versendet. Papier und flache Kleinteile versende ich als Einschreiben. Sollten Sie beim Versand einen anderen Wunsch haben, geben Sie mir bitte Bescheid. BezahlungBitte der Kaufabwicklung via Ebay folgen Versandkosten nach Vertragsabschluß Bei Käufen aus Deutschland sende ich Ihnen nach Auktionsende keine gesonderte Zahlungsaufforderung, nutzen Sie bitte einfach die Kaufabwicklung über Ebay. Bei Käufen aus dem Ausland sende ich Ihnen innerhalb eines Tages eine Zahlungsaufforderung mit den jeweiligen Versandkosten via Ebay zu. Eine Barzahlung und Abholung der Ware ist möglich und erfolgt nach telefonischer bzw. schriftlicher Terminvereinbarung. (Wird in der Artikelbeschreibung kostenloser Versand angegeben, werden Ihnen für den jeweiligen Artikel natürlich keine Versandkosten berechnet) Die Versendung erfolgt in der Regel über DHL bzw. der Deutschen Post

DESCRIPTION:GE 12AU6 A 8426A Vacuum Tube TEKTRONIX Tested 100% ConditionTube: UsedSome boxes are brittle, or have imperfections, starting to crumble TESTED IN A HICKOK 752A1) Filament 2) checked for shorts, Leakage 3) Grid (Gas) 4) Emission Test 5) Dynamic Mutual Conductance Result on Tube 1 ( 800 GM ) Minimum Value = 475 Tube 2 ( 850 GM ) Minimum Value = 475Where NOS Value = 732AND6) Life Test = Useful Life in Tube =100% Since vacuum tubes were made 30 ? 70 years ago New Old Stock or Used may have cosmetic evidence of age. This includes poor print, oxidized pins, faint discoloration, or poorly boxTwo testers are never the same. So this shows what I get, and what you get may be slightly 10% different.If I state any values they are for a guide only.No guarantee is made that any tube will test to a specific value in the buyers tube tester, most all tubes are tested on at least two tube testersThis because of the variation in line voltage, different bias, and circuits. Return PolicyGuarantee:100% Contact UsIf youre in any way dissatisfied with your purchase, do not hesitate to contact us through MY MESSAGES. We will do our best to solve it for you. We are committed to ensuring that you are completely satisfied with every transaction.So Please DO contact us first to get a better solution before you would leave Negative or Neutral feedback. Shipping timesDomestic USPS First Class Mail: 3-7 Days, includes trackingInternational Request an invoice International BuyersPlease Note:Buyer is responsible for all taxes, duties, and import fees. Please contact your local customs office for costs.

Wenn Sie von dem US Marktplatz bestellen, können für die Pakete Steuern und Zollgebühren anfallen, die der Käufer später tragen muss.12AU6 - Audio Gitarrenverstärker Ham Radio TV Rohr - Menge Von [4]Das Datenblatt dieses Produkts wurde ursprünglich auf Englisch verfasst. Unten finden Sie eine automatische Übersetzung ins Deutsche. Sollten Sie irgendwelche Fragen haben, kontaktieren Sie uns.Ein (4) Stück Audio – Gitarre – Verstärker – HAM – Radio – TV-Röhren, Typ 12AU6. Die Röhren werden verwendet, verschieden Marken.Röhrentest mit dem Heath IT-17 Röhrentester gut.Während Sie hier sind, werfen Sie bitte einen Blick auf meine anderen Angebote!Zahlung: PayPal wird bevorzugt. Ich akzeptiere einen Scheck von USA. Bitte leisten Sie Ihre Zahlung innerhalb von 4 Werktagen. Ein (4) Stück Audio – Gitarre – Verstärker – HAM – Radio – TV-Röhren, Typ 12AU6.  Die Röhren werden verwendet, verschieden Marken. Röhrentest mit dem Heath IT-17 Röhrentester gut. Während Sie hier sind, werfen Sie bitte einen Blick auf meine anderen Angebote! Zahlung: PayPal wird bevorzugt. Ich akzeptiere einen Scheck von  USA . Bitte leisten Sie Ihre Zahlung innerhalb von 4 Werktagen. Modified Item No MPN 12AU6 Brand assorted Country/Region of Manufacture United States Model 12AU6 Type 12AU6

Konvolut 20x Röhre 12AU6 von Telefunken UlmAlle mit Ulmer Code und Raute im Boden Unbenutzt / NOS aus ehem. BW-Bestand bzw. Großpackung Zur weiteren Beschreibung schauen Sie sich bitte die Bilder oben an. Zum genauen Betrachten können sie diese auch vergrößern. (Helle Stellen auf den Bildern sind nur Lichtreflexe) Wichtiges zu Ihrem Kauf: Sollte es zu irgendwelchen Problemen kommen, schreiben Sie mir bitte eine Nachricht, ich kümmere mich dann umgehend um eine Lösung. Wenn Sie Ihren Artikel erhalten haben, würde ich mich sehr über eine positive Bewertung freuen. Falls Sie zufrieden waren, geben Sie mir bitte auch 5 Sterne bei den detaillierten Bewertungen. Alle meine Artikel werden als versichertes Päckchen/Paket versendet. Papier und flache Kleinteile versende ich als Einschreiben. Sollten Sie beim Versand einen anderen Wunsch haben, geben Sie mir bitte Bescheid. BezahlungZahlungsmöglichkeiten: (Daten jeweils bei Ebay hinterlegt) Überweisung Barzahlung bei Übergabe PayPal Versandkosten nach Vertragsabschluß Bei Käufen aus Deutschland sende ich Ihnen nach Auktionsende keine gesonderte Zahlungsaufforderung, nutzen Sie bitte einfach die Kaufabwicklung über Ebay. Bei Käufen aus dem Ausland sende ich Ihnen innerhalb eines Tages eine Zahlungsaufforderung mit den jeweiligen Versandkosten via Ebay zu. EineBarzahlung und Abholung der Ware ist möglich und erfolgt nachtelefonischer und schriftlicher Terminsvereinbarung. (Wird in der Artikelbeschreibung kostenloser Versand angegeben, werden Ihnen für den jeweiligen Artikel natürlich keine Versandkosten berechnet) Die Versendung erfolgt über Hermes (nationaler oder internationaler Versand, jedoch nur EU) oder DHL (internationaler Versand, außerhalb der EU).

For sale is a set of vacuum tubes that test solidly in the good on our calibrated Jackson 648A tester, a mix of NIB and good used tubes, a stock photo is shown. you get 1 each12BY7 12BE6 6AQ5 12AX7A/ECC83 12AU7 6GH8 0A2 and you get two 12AU6/12BA6 tubes (they are interchangable plug in subs for each other you might get two of the same)

tube électronique (le tube HF94 est apparu dans les années 50) pentode RF/IF, chauffage indirect 12,6 V 0,15 A continuité du filament, isolation des électrodes et émissivité des cathodes testées à laide dun lampemètre TC-2 Certainement neuf car dans son emballage dorigine (non scellé) et aucune trace dutilisation. Petits caractères : 6628 Au Ce tube se trouve à Bovesse (entre Namur et Gembloux) Si vous connaissez un mode dexpédition qui vous convient mieux que celui proposé (moins cher, plus sûr ou plus commode), prévenez-moi AVANT de payer votre achat pour que vous envoie une facture corrigée. Exemple : livraison dans un point denlèvement Mondial Relay dun pays limitrophe de la Belgique.

tube électronique (le tube HF94 est apparu dans les années 50) pentode RF/IF, chauffage indirect 12,6 V 0,15 A continuité du filament, isolation des électrodes et émissivité des cathodes testées à laide dun lampemètre TC-2 Certainement neuf car dans son emballage dorigine (non scellé) et aucune trace dutilisation. Petits caractères : 6628 Au Ce tube se trouve à Bovesse (entre Namur et Gembloux) Si vous connaissez un mode dexpédition qui vous convient mieux que celui proposé (moins cher, plus sûr ou plus commode), prévenez-moi AVANT de payer votre achat pour que vous envoie une facture corrigée. Exemple : livraison dans un point denlèvement Mondial Relay dun pays limitrophe de la Belgique.

Wir haben deinradio! Senden Sie uns eine Nachricht Unser Shop Verkäuferprofil Bewertungen Shop speichern Kontakt 6x 12AU6 Röhre Telefunken geprüft top Brimar preamp Röhrenverstärker Vorstufe Bitte entnehmen Sie den genauen Zustand und Lieferumfang den Bildern.Die Röhren wurden als gut geprüft. Wir bieten eine Vielzahl an alten Bastel -und Sammelobjekten an.Bitte beachten Sie, dass aufgrund des Alters keine Garantien auf die technischen Funktionen gegeben werden können.The parts are very old, we dont give any guarantee on the technical function. Zahlung Versand Kombiversand nur bei Artikeln möglich, die am gleichen Tag gekauft werden. (aus einer Auktionsrunde) DIe angepasste Rechnung erhalten Sie dann nach Auktionsende. Aufwendiger Versand (klimaneutral) mit DHL Premium in 2-welliger Kartonage und aufwendiger Polsterung! Versand größtenteils plastikfrei, 80 Prozent des Versandmaterial aus recyceltem Altpapier bzw. Second-Hand Kartonagen. WORLDWIDE SHIPPING ON REQUEST! PLEASE ASK BEFORE YOU BUY! Links Unser Shop Verkäuferprofil Bewertungen Shop speichern Kontakt Newsletter Verpassen Sie keine Angebote mehr! Wir informieren Sie über Angebote und Aktionen bequem per E-Mail. Newsletter abonnieren Kontakt Senden Sie uns eine Nachricht

tube électronique (le tube HF94 est apparu dans les années 50) pentode RF/IF, chauffage indirect 12,6 V 0,15 A continuité du filament, isolation des électrodes et émissivité des cathodes testées à laide dun lampemètre TC-2 Certainement neuf car dans son emballage dorigine (non scellé) et aucune trace dutilisation. Petits caractères : 6628 Au Ce tube se trouve à Bovesse (entre Namur et Gembloux) Si vous connaissez un mode dexpédition qui vous convient mieux que celui proposé (moins cher, plus sûr ou plus commode), prévenez-moi AVANT de payer votre achat pour que vous envoie une facture corrigée. Exemple : livraison dans un point denlèvement Mondial Relay dun pays limitrophe de la Belgique.

DESCRIPTION:GE 12AU6 Vacuum Tube Tested 100% ConditionTube: UsedSome boxes are brittle, or have imperfections, starting to crumble TESTED IN A HICKOK 752A1) Filament 2) checked for shorts, Leakage 3) Grid (Gas) 4) Emission Test 5) Dynamic Mutual Conductance Result on Tube 1 ( 800 GM ) Minimum Value = 475Where NOS Value = 732AND6) Life Test = Useful Life in Tube =100% Since vacuum tubes were made 30 ? 70 years ago New Old Stock or Used may have cosmetic evidence of age. This includes poor print, oxidized pins, faint discoloration, or poorly boxTwo testers are never the same. So this shows what I get, and what you get may be slightly 10% different.If I state any values they are for a guide only.No guarantee is made that any tube will test to a specific value in the buyers tube tester, most all tubes are tested on at least two tube testersThis because of the variation in line voltage, different bias, and circuits. Return PolicyGuarantee:100% Contact UsIf youre in any way dissatisfied with your purchase, do not hesitate to contact us through MY MESSAGES. We will do our best to solve it for you. We are committed to ensuring that you are completely satisfied with every transaction.So Please DO contact us first to get a better solution before you would leave Negative or Neutral feedback. Shipping timesDomestic USPS First Class Mail: 3-7 Days, includes trackingInternational Request an invoice International BuyersPlease Note:Buyer is responsible for all taxes, duties, and import fees. Please contact your local customs office for costs.

  TUBE HUNTER VACUUM TUBE GEMS THESE ARE THE SPECIFICS OF THE TUBE/TUBES/PARTS FOR SALE THESE ARE THE TUBE/TUBES/PARTS FOR SALE:  MANUFACTURER:                               WESTINGHOUSE PRODUCTION CITY:                                       US TUBE TYPE:     12AU6 A 8426 DESIGNATION:                                               MINIATURE PENTODE YEAR:     1960 MONTH OR WEEK    13 Date code match    SINGLE SILK SCREEN CONDITION %:                   100% MICA:   2 PLATES:   GREY GM%:   121% SINGLE/PAIR/QUAD/MULTI:   SINGLE  GETTER:                                                         O GETTER DATE CODE                                                        60R13 This auction is for ONE TUBE!!!  I guarantee you will not be disappointed. STOCK PHOTO Normal 0 false false false EN-US X-NONE X-NONE On my tester a B&K 747 tester:    Below 55 = BAD    55-66 = ?     65 -100 = Good    100-120+ = NOS    I want to see you happy with your purchase. I will never sell a tube that is below standard…… I have sold many tubes here on Ebay, and all my customers have been completely satisfied. I will work with you in good faith if there are any problems, or if you are unsatisfied in any way. I want your business now and in the future, so I assume you are the boss, and I am the employee. All tubes are tested for shorts, continuity, and emissions. I prefer PayPal. ALL CUSTOMERS PLEASE READ ALL NOTES BEFORE BUYING FROM ME !! 1.  RETURNS: It is my highest desire that you are completely satisfied with your purchase from me. I will bend over backwards to make sure that you are a happy customer. If anything you buy from me is less than satisfactory, message me BEFORE you either open a case or hit the “item not as described” button. Sound quality is tremendously SUBJECTIVE. For tubes returned for noise or sound quality of any kind you pay for the shipping we refund the purchase. We refund the price of the item NOT THE SHIPPING COST. If we sent the wrong tube we will of course pay for return shipping. For any tubes that are DOA we require that you send a us a picture of the shipping box to show us the damage. We test EVERY tube sent out and none should be DOA unless broken in shipping. 2.    PLEASE NOTE:  Tube silkscreen (lettering on the tubes) is VERY fragile. It can be wiped off and destroyed VERY easily. If you wipe off the silkscreen while handling the tube you diminish their value by up to 70%. DO NOT handle the tubes or hold them from the cylinder. ALWAYS hold them from the ENDS. If you are returning tubes and they are not in the same condition cosmetically I cannot give you a full refund. THIS IS VERY IMPORTANT. 3.  UNLESS YOU MAKE ARRANGEMENTS WITH US BEFORE YOU PURCHASE, YOU MUST PAY FOR ITEMS PURCHASED WITHIN 2 DAYS OR A CASE WILL BE OPENED FOR AN UNPAID ITEM!!! 4. TESTING: I test all tubes that I sell in one way or another, or I will state untested. I have a B&K 747 tube tester. This is a mutual conductance tester. It give a percentage value of gm for the tube under test and checks for shorts and grid emissions. I also use a Tektronix curve tracer for testing triodes. I give a number of evaluations for tubes. One evaluation is a screen shot of the tube with a high voltage applied to the plate. This helps the buyer see the linearity of the tube in question at the highest voltage the tube will see in a real circuit. The Curve tracer steps the triode through 10 gate/grid voltages starting with -10 volts and going to 0 volts. The lines show how the tube conducts throughout that range. At 0 volt the tube is at max conduction and is the top line on the display. It is easy at that point to take where that top line intersects the plate voltage, find the milliamp level and compare it to the datasheet. I give those numbers for you in the Item condition box. To further help the buyer I also include the Design values, for gm and ma readings in the table. This can then be compared to other tube sellers using inferior test methods such as Hickok,  Amplitrex, and other testers. The Tektronix curve tracer gives values within 3% of the actual value. The very best portable testers only can approach 10% accuracy.5.    Please note: The numbers given for gm are what I see on my tester. I DO NOT guarantee that you will see those numbers on your tester. I only guarantee that these tubes will test good, with no shorts, or gas, on a decent calibrated tester. I dont guarantee or imply anything else. 6. VERY IMPORTANT!!! Vintage tube testers almost always, due to age, have VERY LOW HEATER VOLTAGES!!!  Every tester I have ever bought is below 6 volts when selecting 6.3 volts. They average 5.8 volts. The voltage NEEDS to be 6.3 and 12.6. You can calibrate a vintage tube tester all you want. If the heater voltage is not right, you will NEVER get the right gm value. I have customers complain that their tubes are not the same as what I see on my tester. They say they have a calibrated tube tester. I have 40 tube testers. On all of them I have an outside regulated DC power supply that feeds the tube tester the correct heater voltage. 7. I dont check each and every tube for noise or tone. This is SUBJECTIVE and it is too time consuming. If you dont like the noise level or the tone we offer a hassle free refund policy.  International customers note: 1. Please wait for us to invoice you for the correct amount. If you have purchased more than one item, we must calculate how much the shipping will be. Shipping will be HIGHER due to insurance and shipping methods needed for expensive item totals. If you are buying only one item this will not be an issue. 2. Under no circumstances will we state on a US customs a declared value of less than the sale price. This is an honesty issue. We are honest with everyone to the best of our ability to do so. We want you to trust that what we say is true. There cannot be that trust, if we make false statements knowingly to anyone. If your country has tariffs/taxes so high that they cause large numbers of normally honest folks to make false statements, we urge you to work for change of those laws. 3 International buyers if you bought more than one item and want combined shipping it will ship in 2 days. 4. And all the Angels sang because the heavenly music was playing and it was turned all the way up.   Listing and template services provided by inkFrog

family   TUBE HUNTER VACUUM TUBE GEMS THESE ARE THE SPECIFICS OF THE TUBE/TUBES/PARTS FOR SALE THESE ARE THE TUBE/TUBES/PARTS FOR SALE:  MANUFACTURER:     RCA PRODUCTION CITY:                                     USA TUBE TYPE:    12AU6 DESIGNATION:                                              TUBE YEAR:     1960s MONTH:     VARIES Date code match    SINGLE SILK SCREEN CONDITION %:                    100% MICA:    2 PLATES:    GREY GM %:     120% SINGLE/PAIR/QUAD/MULTI:     SINGLE GETTER:                                                          0  GETTER                                     DATE:      VARIES NOS NIB. This auction is for ONE TUBE. You will receive one of these tubes. All are NOS NIB and tested by by me.   THESE TUBES ARE NOS NIB. STOCK PHOTO Normal 0 false false false EN-US X-NONE X-NONE On my tester a B&K 747 tester:    Below 55 = BAD      55-65 = ?     65 -100 = Good     100-120+ = NOS   *********************************************************************************** IMPORTANT NOTE ON FILLING ORDERS With NOS tubes we will substitute NOS American tubes with NOS American of a different brand to fill an order if we are short the brand listed. If you are brand sensitive let me know BEFORE you order.  NOTES ON PHOTO PROPS:  THE RCA DOG, PHONOGRAPH, REDDY KILLOWATT, AND OTHER STATUETTES, INCLUDING DEVICES TO MAKE TUBES OR OTHER PARTS STAND UP STRAIGHT, ARE NOT PART OF THE SALE. THIS IS TRUE OF ANY PROPS USED IN PHOTOGRAPHY IN THE LISTING THAT ARE NOT SPECIFICALLY CALLED OUT IN THE LISTING AS ITEMS FOR SALE. NOTES ON PHOTOS FOR SINGLE TUBES: IF YOU ARE BUYING A SINGLE TUBE: FOR THE MOST PART WITH TUBES UNDER 15 DOLLARS WE ARE USING STOCK PHOTOS FOR SINGLES. YOUR MILEAGE MAY VARY. YOU WILL RECEIVE A NEW TUBE. IT WILL TEST NOS. IT MAY OR MAY NOT BE ONE OF THE ONES IN THE PICTURE. WE GET TUBES IN ALL THE TIME. WITH SINGLES OF A LOW VALUE WE ARE NOT PICKY ABOUT DATES AND CONSTRUCTION AND THINGS LIKE THAT. WE ALSO MAY SUBSTITUE A TUBE BY A DIFFERENT MANUFACTOR IF WE ARE LOW ON STOCK OF THAT BRAND SUCH AS AN RCA FOR A GE FOR EXAMPLE, BUT WE WILL NOT SEND A JAPANESE BRAND FOR A USA MADE TUBE, OR A LOWER QUALITY TUBE IN ANY WAY. IF WE ARE SELLING A PAIR, OR A HIGH VALUE SINGLE THEN WE GET SERIOUS ABOUT SUCH THINGS.  NOTES ON MATCHING: 1. TRIODES SIMILAR TO 12AX7 ARE DONE ON A TEKTRONIX 576 CURVE TRACER IF I HAVE MATCHED THEM WITH THIS MACHINE I GUARANTEE THAT THESE MATCHED PAIRS WILL BE NOT BE ABLE TO DIFFERENTIATED WITH THE HUMAN EAR IN A PREAMP CIRCUIT.  2. ON OTHER TUBE I USE A CALIBRATED HICKOK 600A TO MATCH TUBES. 3. ON MODERN TUBES, FOR WHICH THE 600A CANNOT PERFORM TESTS, I USE THE CALIBRATED B&K 747B TUBE TESTER. NOTES ON THE BOXES. LISTING WILL GENERALLY HAVE INFORMATION ABOUT ANY BOXES ASSOCIATED WITH THE TUBES FOR SALE. THESE ARE THE OPTIONS: 1. ORIGINAL BOXES IN VARYING CONDITION. THESE BOXES WILL BE THE ORIGINAL BOXES THE TUBES CAME IN AND WILL SHOW AGING IN VARYING DEGREES. THESE TUBES ARE ASSUMED TO BE NEW AND WILL TEST AS NOS. 2. NO BOXES PROVIDED (NONE AVAILABLE USUALLY USED AND SHOULD BE ASSUMED TO BE USED UNLESS OTHERWISE STATED. 3. REPURPOSED BOXES. THESE ARE BOXES OF THE SAME MANUFACTURER. THESE WILL HAVE A LABEL OVER THE TUBE NUMBER THAT REFLECTS THE TUBE BEING SOLD. THESE TUBES SHOULD BE ASSUMED TO BE USED UNLESS OTHERWISE STATED. 4. TUBEHUNTER BOXES. THESE ARE BOXES I HAVE MADE WITH GREAT TIME AND EXPENSE TO PROTECT YOUR VACUUM TUBES AND PROVIDE FOR STORAGE AND EASY IDENTIFICATION. TUBES IN THESE BOXES SHOULD BE ASSUMED TO BE USED UNLESS OTHERWISE STATED. 5. WHITE BOXES. SHOULD BE SELF EXPLANATORY. NOTES ON TESTING OF TUBES: THIS IS DONE ON A NUMBER OF TESTING DEVICES 1. TEKTRONIX CURVE TRACER 2. B&K 747 TUBE TESTER 3. MERCURY 1000 DYNAMIC MUTUAL CONDUCTANCE TESTER 4. HICKOK 600A DYNAMIC MUTUAL CONDUCTANCE TUBE TESTER  I test all tubes that I sell in one way or another, or I will state untested. I have a B&K 747 tube tester. This is a mutual conductance tester. It give a percentage value of gm for the tube under test and checks for shorts and grid emissions. I also use a Tektronix curve tracer for testing triodes. I give a number of evaluations for tubes. One evaluation is a screen shot of the tube with a high voltage applied to the plate. This helps the buyer see the linearity of the tube in question at the highest voltage the tube will see in a real circuit. The Curve tracer steps the triode through 10 gate/grid voltages starting with -10 volts and going to 0 volts. The lines show how the tube conducts throughout that range. At 0 volt the tube is at max conduction and is the top line on the display. It is easy at that point to take where that top line intersects the plate voltage, find the milliamp level and compare it to the datasheet. I give those numbers for you in the Item condition box. To further help the buyer I also include the Design values, for gm and ma readings in the table. This can then be compared to other tube sellers using inferior test methods such as Hickok,  Amplitrex, and other testers. The Tektronix curve tracer gives values within 3% of the actual value. The very best portable testers only can approach 10% accuracy. 5.    Please NOTE: The numbers given for gm are what I see on my tester. I DO NOT guarantee that you will see those numbers on your tester. I only guarantee that these tubes will test good, with no shorts, or gas, on a decent calibrated tester. I dont guarantee or imply anything else. 6. VERY IMPORTANT NOTE!!! Vintage tube testers almost always, due to age, have VERY LOW HEATER VOLTAGES!!!  Every tester I have ever bought is below 6 volts when selecting 6.3 volts. They average 5.8 volts. The voltage NEEDS to be 6.3 and 12.6. You can calibrate a vintage tube tester all you want. If the heater voltage is not right, you will NEVER get the right gm value. I have customers complain that their tubes are not the same as what I see on my tester. They say they have a calibrated tube tester. I have 40 tube testers. On all of them I have an outside regulated DC power supply that feeds the tube tester the correct heater voltage. 7. NOTE I dont check each and every tube for noise or tone. This is SUBJECTIVE and it is too time consuming. If you dont like the noise level or the tone we offer a hassle free refund policy.  8. NOTE. TESTING RESULTS SHOW HOW THE TUBE IS PERFORMING  NOW.  TESTING RESULTS DO NOT SHOW HOW OLD A TUBE IS OR HOW MANY HOURS IT HAS BEEN USED. HOWEVER IF A TUBE TEST NOS YOU CAN BE ASSURED IT WILL LAST A LONG TIME AND IS WORKING VERY WELL. NOTES ON CUSTOMER RELATIONS: I want to see you happy with your purchase. I will never sell a tube that is below standard…… I have sold many tubes here on Ebay, and all my customers have been completely satisfied. I will work with you in good faith if there are any problems, or if you are unsatisfied in any way. I want your business now and in the future, so I assume you are the boss, and I am the employee. All tubes are tested for shorts, continuity, and emissions. I prefer PayPal. NOTES ON RETURNS: 1.  NOTE: RETURNS: It is my highest desire that you are completely satisfied with your purchase from me. I will bend over backwards to make sure that you are a happy customer.2. NOTE: We almost always have a replacement available of the same or sometimes even higher quality. Please note that it is our desire TO DO BUSINESS! We never rip anyone off.......EVER. 3. NOTE: If anything you buy from me is less than satisfactory, message me BEFORE you either open a case or hit the “item not as described” button.4. NOTE: Sound quality is tremendously SUBJECTIVE. For tubes returned for noise or sound quality of any kind you pay for the shipping we refund the purchase. We refund the price of the item NOT THE SHIPPING COST. If we sent the wrong tube we will of course pay for return shipping. For any tubes that are DOA we require that you send a us a picture of the shipping box to show us the damage. We test EVERY tube sent out and none should be DOA unless broken in shipping.5.    PLEASE NOTE:  Tube silkscreen (lettering on the tubes) is VERY fragile. It can be wiped off and destroyed VERY easily. If you wipe off the silkscreen while handling the tube you diminish their value by up to 70%. DO NOT handle the tubes or hold them from the cylinder. ALWAYS hold them from the ENDS. If you are returning tubes and they are not in the same condition cosmetically I cannot give you a full refund. THIS IS VERY IMPORTANT. 6. NOTE: UNLESS YOU MAKE ARRANGEMENTS WITH US BEFORE YOU PURCHASE, YOU MUST PAY FOR ITEMS PURCHASED WITHIN 2 DAYS OR A CASE WILL BE OPENED FOR AN UNPAID ITEM!!! International customers  NOTE: 1. Please wait for us to invoice you for the correct amount. If you have purchased more than one item, we must calculate how much the shipping will be. Shipping will be HIGHER due to insurance and shipping methods needed for expensive item totals. If you are buying only one item this will not be an issue. 2. NOTE: Under no circumstances will we state on a US customs a declared value of less than the sale price. This is an honesty issue. We are honest with everyone to the best of our ability to do so. We want you to trust that what we say is true. There cannot be that trust, if we make false statements knowingly to anyone. If your country has tariffs/taxes so high that they cause large numbers of normally honest folks to make false statements, we urge you to work for change of those laws. 3 NOTE: International buyers if you bought more than one item and want combined shipping it will ship in 2 days.4. NOTE: And all the Angels sang because the heavenly music was playing and it was turned all the way up.     Listing and template services provided by inkFrog

DESCRIPTION:GE 12AU6 Vacuum Tube Tested 100% ConditionTube: UsedSome boxes are brittle, or have imperfections, starting to crumble TESTED IN A HICKOK 752A1) Filament 2) checked for shorts, Leakage 3) Grid (Gas) 4) Emission Test 5) Dynamic Mutual Conductance Result on Tube 1 ( 850 GM ) Minimum Value = 475Where NOS Value = 732AND6) Life Test = Useful Life in Tube =100% Since vacuum tubes were made 30 ? 70 years ago New Old Stock or Used may have cosmetic evidence of age. This includes poor print, oxidized pins, faint discoloration, or poorly boxTwo testers are never the same. So this shows what I get, and what you get may be slightly 10% different.If I state any values they are for a guide only.No guarantee is made that any tube will test to a specific value in the buyers tube tester, most all tubes are tested on at least two tube testersThis because of the variation in line voltage, different bias, and circuits. Return PolicyGuarantee:100% Contact UsIf youre in any way dissatisfied with your purchase, do not hesitate to contact us through MY MESSAGES. We will do our best to solve it for you. We are committed to ensuring that you are completely satisfied with every transaction.So Please DO contact us first to get a better solution before you would leave Negative or Neutral feedback. Shipping timesDomestic USPS First Class Mail: 3-7 Days, includes trackingInternational Request an invoice International BuyersPlease Note:Buyer is responsible for all taxes, duties, and import fees. Please contact your local customs office for costs.

DESCRIPTION:GE 12AU6 Vacuum Tube Tested 100% ConditionTube: UsedSome boxes are brittle, or have imperfections, starting to crumble TESTED IN A HICKOK 752A1) Filament 2) checked for shorts, Leakage 3) Grid (Gas) 4) Emission Test 5) Dynamic Mutual Conductance Result on Tube 1 ( 825 GM ) Minimum Value = 475Where NOS Value = 732AND6) Life Test = Useful Life in Tube =100% Since vacuum tubes were made 30 ? 70 years ago New Old Stock or Used may have cosmetic evidence of age. This includes poor print, oxidized pins, faint discoloration, or poorly boxTwo testers are never the same. So this shows what I get, and what you get may be slightly 10% different.If I state any values they are for a guide only.No guarantee is made that any tube will test to a specific value in the buyers tube tester, most all tubes are tested on at least two tube testersThis because of the variation in line voltage, different bias, and circuits. Return PolicyGuarantee:100% Contact UsIf youre in any way dissatisfied with your purchase, do not hesitate to contact us through MY MESSAGES. We will do our best to solve it for you. We are committed to ensuring that you are completely satisfied with every transaction.So Please DO contact us first to get a better solution before you would leave Negative or Neutral feedback. Shipping timesDomestic USPS First Class Mail: 3-7 Days, includes trackingInternational Request an invoice International BuyersPlease Note:Buyer is responsible for all taxes, duties, and import fees. Please contact your local customs office for costs.