For sale a nice pair of ECC83 preamplifier tubes. They were tested for emissions and transconductance with good results.They were closely matched for transconductance at nominal plate current of 1.2mA. If you can bias your amplifier for both tubes individually, than these tubes are perfect choice for you. The price is naturally for the pair. **************************************************** ** ** ** ** ** ** ** ** ************************************ **About the testingMost of my tubes are tested, but always pay attention to the description in the listing!Vacuum tubes can be tested for a variety of attributes, but they are very rarely tested for everything. I usually test for the attributes I find most important with the specific tube. I take responsibility for these measurements, but not for other attributes that I have not tested!I dont take responsibility for any damage might caused to your equipment by inappropriate, or careless use of the tubes! Also keep in mind that when measuring vacuum tubes with different test equipment there will always be differences in the results. However, these differences shall not be significant (usually within 15%), and when done right, wont show a bad tube as good, or a barely good tube as very strong. If you are not sure what you need or how to choose, message me and I will try to help you make a decision that fits your needs. Tests I do:- Ia / emission test - is the most common test, which shows how strong is a tubes plate current according to nominal catalog data. The tests are usually done on a standard operating point, and these values ???????????????????????????will be shown on a tag or in the description.Usually above 80-90% of nominal we say it is Strong (or NOS), and above 60% it is still Good.- S / transconductance test / or GM - is the second important attribute of a tube indicated as mA/V. These tests are carried out at the nominal plate current and will also be indicated on the test tags.- Noise test - is made where it is indicated in the description. It means the tube has been tested for weird noises or microphony while playing music.It will be shown on the test tag as a mark. Keep in mind that noise test does not guarantee any sound quality, which is always the product of a specific tube type, brand, Ia and S attributes, and the amplifier as a system. Noise test means that in a simple audio circuit the tube did t make any disturbing noises, hum, and was not microphonic even when gently tapped. (In an audio system many parts, or the setup can couse weird noises, but it is not necessarily coused by the tube, but by certain interferences.) **************************************************** ** ** ** ** ** ** ** ** ************************************ **ShippingThe tubes will arrive to you in a well protected package and will be shipped within two business days from payment. The package will be sent with priority and a tracking number will be provided. If you find other tubes in my inventory, I will gladly combine shipping, and the cost will stay as listed under 0.5 kg total .For a package that exceeds this weight, we shall discuss the shipping costs. **************************************************** ** ** ** ** ** ** ** ** ************************************ **About meI am a private seller located in the EU. I buy and sell vacuum tubes.Im dedicated to reserving this beautiful technology, and for that purpose I select, test and rate my tubes. I build my own testers, work with them daily, and I know how they operate. I am also a test enthusiast who likes to learn more about tubes and tube testing. I am dedicated to sell tubes as described, and believe these tubes will perform as they should be according to the description.

2x ITT Lorenz ECC83 Röhre getestet mit dem Neuberger RPM 375 - bei diesem Gerät sind 1,2mA = 100%die Werte von einer Röhre sind 0,85 / 0,7mA - bei der anderen sind sie 0,75 / 0,7mA die bereitgestellten Fotos zeigen den angebotenen Artikelaußerdem zeigen sie die Bestandteile der Lieferungweitere Artikel finden Sie in meinem Shop

4 x ECC 83 12ax7 RFT Philips West Germany Made Nos Nib New. Valvole nuove mai usate.Aperte solo per fare la foto.Scritte perfetteValvole testate e funzionanti al 100%. Loggetto viene venduto cosi come in foto, visto e piaciuto.Non rispondo di danni dovuti alla spedizione. New valves never used.Open just to take the picture.Perfect writingTested and working valves. 100% The object is sold as well as in photo, seen and liked.I am not liable for damage due to shipping.

Eine gebrauchte und geprüfte Röhre ECC83 RFT mit guten Werten. Die Messwerte: 1,0 / 0,9 mA bei Ug = -2,0V | 1,8 / 1,7 mA bei Ug = - 1,5V

Eine gebrauchte und geprüfte Röhre ECC83 RFT. Nicht mehr neu aber mit Werten im Gut-Bereich - siehe Fotos. Die Messwerte: 0,80 / 0,75 mA bei Ug = -2,0V | 2,0 / 1,9 mA bei Ug = - 1,3V

1x ECC 83 Funkwerk Erfurt (RFT) Röhre ... Aus grösserer Sammlungsauflösung ... Zustand : Ungeprüfter Fundzustand, sieht optisch Neu oder wenig gebraucht aus ... Verkauf : Vorsichtshalber als defekte Bastlerware !!! Privatverkauf: Keine Garantie, Reklamation, Umtausch oder Rücknahme !!!

Eine gebrauchte und geprüfte Röhre ECC83 RFT / Funkwerk Erfurt mit guten Werten.Soll für neue Röhren / 100% = 1,2 mA Die Messwerte: 1,2 / 0,9 mA bei Ug = -2,0V | 2,2 / 1,6 mA bei Ug = - 1,3V

Eine gebrauchte und geprüfte Röhre ECC83 RFT. Nicht mehr neu aber mit Werten im Gut-Bereich - siehe Fotos.Soll für neue Röhren / 100% = 1,2 mA Die Messwerte: 1,00 / 0,65 mA bei Ug = -2,0V | 2,0 / 1,8 mA bei Ug = - 1,3V

Eine gebrauchte und geprüfte Röhre ECC83 RFT / RWN. Nicht mehr neu aber mit noch guten Werten. Soll für neue Röhren / 100% = 1,2 mA Die Messwerte: 1,0 / 0,8 mA (2,3 / 1,8 mA bei Ug = -1,3V)

Z&I RFT Germany ECC83 12AX7 Valve Tube NOS Boxed (M269). BK600 = 93/95 Hickok = 1800/1850 mhos gm

Angeboten wird die abgebildete Röhre ECC83 von RFT.Beide Systeme der Röhre wurden auf meinem Röhrenprüfgerät Funke W19 mit 2,2mA gemessen.Die Schachtel ist nicht mrhr so schön. Offered is the pictured tube ECC83 from RFT.Both systems of the tube were measured on my tube tester Funke W19 with 2.2mA.The box is not so nice anymore.

1 x Gebot = 1 Paar gematchte ungebrauchte RFT Röhren Alle Fertigung NEUHAUS Lieferung von No. 1 bis 5 2 x Röhre ECC83 12AX7 RFT Mit kontrolliertem Burn-In Prozeß durchlaufen** Röhren wurden unter realen Betriebsbedingungen gemessen.Gematchte Paare mit 100% **Zur Wiederherstellung der bestmöglichen Herstellerqualität haben diese Röhren einen kontrollierten Burn-In Prozeß durchlaufen.Dauer - 1 bis 3 Tage

FOR SALE 2 USED RFT ECC83 TUBES HANDLING TIME 3 DAYS AFTER PAYMENT COMBINE PAYMENT&SHIPPING AVAILABLE

Original alte Produktion. Aus den 1950er Jahren. Alter Lagerbestand. Mit DISC- Getter. Die 1 im Dreieck zeigt an, dass es sich um Röhren erster Güte handelt, die dem internationalen Standard entsprechen.Mit Funke W19 geprüft: 2.0/1.9 - 1.7/2.8 - 2.1/2.2. Gut ab 1.9/1.9. Daher leider KEINE Funktionsgarantie! NO WORKING GUARANTEE! Die Röhren eignen sich eventuell nur noch als Deko. BITTE BEACHTEN! Optischer Zustand wie Bilder. Bitte beachten: Das Funke W19 ist ein Prüfgerät das gute und schlechte Röhren unterscheidet, kein Meßgerät. In der Zukunft werden noch weitere Röhren eingestellt. Reinschauen lohnt bestimmt! Versand in Deutschland: 5 EUR. International shipment 10 EUR. Für einen Kombiversand bitte die angepaßte Zahlungsinformation abwarten. We combine shipment. Please await the adjusted payment information before you pay. International shipment will be by registered airmail. NOTE: because of the ebay policy shipment to some countries is NOT possible. We will CANCEL sales from buyers with a shipping adress in such countries. Feel free to ASK about shipment to your country. Normal 0 21 false false false DE X-NONE X-NONE WICHTIG: Alte Sammlerstücke. Der Artikel ist sehr alt und nicht oder nicht vollständig getestet. Daher können keine Garantien auf die technische Funktion gegeben werden. Der Käufer muss ihn vor einer Inbetriebnahme durch eine fachkundige Person überprüfen lassen. Jede Benutzung geschieht auf eigene Verantwortung! Auf die erforderliche Sachkunde und Sicherheitsvorschriften wird nachdrücklich hingewiesen! Der Verkauf erfolgt, soweit gesetzlich zulässig, unter Ausschluss von jeglicher Garantie oder Gewährleistung. Insoweit keine Haftung für Mangelschäden und Mangelfolgeschäden! Bei eventuell auftretenden Problemen bitte ich jedoch um Kontaktaufnahme. Der Käufer erkennt dies durch sein Gebot an. Der Artikel unterliegt der Differenzbesteuerung nach § 25a Umsatzsteuergesetz. Mehrwertsteuer ist nicht ausweisbar. (32 09 11 2)

Biete eine original alte ECC83 mit Ring-Getter, (siehe Fotos), eine Vorstufen-Elektronenröhre mit sehr sehr guten Werten von RWN* Hörtest geräuscharm! Austauschbar mit: 12AX7... Gemessen mit FUNKE W19: 3,6 / 3,8 mA (105 % / 110%, gut ab 1,9 mA = 60 %)*Röhrenwerk Neuhaus, ehem. Telefunken 1pc. ECC83/ 12AX7 v.v. good with ring getter, tube for preamp / tubeamp PayPal

PLEASE, READ CAREFULLY EVERYTHING. IT IS IMPORTANT. About Item: Present to you RFT ECC83 – Made in Germany. Construction with single O-getter and gray plates. Produced during the 1960s in Germany.Tube is tested with professional tube Tester L3-3.Va = 250 V, Vf = 12.6 V, Vg1= -2 V. la min/max acceptable value Ia = > 0.8 mA. Ia1 Ia2 | pcs1. 0.88 mA 1.18 mA 22. 0.90 mA 0.92 mA 23. 0.96 mA 0.96 mA 24. 1.20 mA 1.12 mA 25. 1.26 mA 1.38 mA 26. 1.30 mA 1.46 mA 2We have these number of measured tubes in stock.Please select of the list and write to us.These are an often overlooked NOS 12AX7 that was made in Germany. They are low noise, low microphony, and are great in circuits that may be a little tough on other 12AX7s. Somewhat relaxed on top, but they are typically known for having a edgier sound in the mids and bass, not a liquid midrange like a Mullard. Identical to:ECC83 = 12AX7 = B339 = 95-127-01 = 6L13 = CM1 = ECC83SSimilar TubesNormally replaceable-slightly different: 0AX7 ; 12AX7A ; CV492 ; E2164Other class quality (otherwise equal): 7025 ; CV4004 ; E83CC ; M8137Other characteristic (electr. data): 12AY7 ; 6N4_ChinaOther base and other heater: 6EU7 ; ECC808Multiple differences or of other kind: 5751 ; 7729The thin glass tube envelope is 21?mm in diameter and, excluding the B9A base pins, is 48?mm tall.Weight: 10 grams PLEASE, READ CAREFULLY! SHIPPING METHODS:1. Europe - Economy International Shipping - no tracking number. If you wish faster delivery and tracking number, please contact us before paying. 2. Worldwide - Standard International Shipping - with tracking number included in the cost of shipping. 3. All orders above $60 - with tracking number included in the cost of shipping. The delivery time varies from 7 to 45 working days (9 weeks) to most of the countries. Detailed info you can find in the table below. Delivery time % of shipments that arrive in the said delivery time Country working days (without holidays and weekends) <15 15-24 25-34 35-45 >45 <3 weeks 5 weeks 7 weeks 9 weeks >9 weeks Canada, United States 5 % 85 % 7 % 3 % 0 % Africa, South America 5 % 20 % 55 % 20 % 0 % Japan, South Korea 10 % 85 % 5 % 0 % 0 % Taiwan, Thailand 5 % 45 % 45 % 5 % 0 % China, India 5 % 40 % 50 % 5 % 0 % Indonesia, New Zealand 5 % 40 % 50 % 5 % 0 % Israel 5 % 65 % 30 % 0 % 0 % Australia 5 % 55 % 35 % 5 % 0 % Russia 5 % 50 % 40 % 5 % 0 % Europe 60 % 35 % 5 % 0 % 0 % Others, not entered shall, countries 5 % 20 % 55 % 20 % 0 % Items are generally shipped out within 24 (rarely 48) hours after payment has been confirmed (Holidays, Sat. & Sun. excluded). The delivery time depends on the destination, holidays, customs clearance factor and other factors. Please, if you have a problem, DO NOT OPEN CASE on eBay before this period has elapsed or before you communicate with us. We ship your package to your eBay address. Please update your complete address including full name and phone number during checkout. We are not responsible for any wrong or undeliverable address. INTERNATIONAL BUYERS – PLEASE NOTE: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility. Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying. ADDITIONAL INFORMATION & QUESTIONS: The pictures are for general information only. They do not carry technical information. I apply maximum efforts to work better and better. It is very important for me to get your feedback to know, whether you are really satisfied completely! Please, contact us if you have questions - especislly in the delivery term. Please use the link Ask seller a question. GUARANTEES & a POLICY of RETURN: We guarantee you complete satisfaction with all our products. If you receive an item you ordered damaged or defective, we will send replacement item. We only accept returns if the items in original package you have received are not what was described in the auction, damaged or defective. If exchange is not possible money refund will be issued. All returns must be sent to Bulgaria. Item for returning must have the original tags and packing, otherwise it wont be accepted. Thanks And Good luck! 100431

2x RFT ECC83 (=12AX7 B339) 1960s NOS/NIB, Smooth Plates, 100% Same Factory Codes Two pieces of East-German RFT Neuhaus ECC83 / 12AX7 variant with smooth plates and O getters. This are 1960s NOS/NIB/MINT in old-style retail RFT boxes! Matching serial numbers on the glass/boxes. Same factory codes and matching codes on the boxes! in excellent visual and electrical condition. Tested as 100%+: Tube 1: Ia1= 2.00 mA / Ia2 = 1.80 mA, S/gm1= 1.65 mA/V / S/gm2= 1.50 mA/V Tube 2: Ia1= 2.35 mA / Ia2 = 2.00 mA, S/gm1= 1.90 mA/V / S/gm2= 1.65 mA/V ...where a new/unused tube should have S/gm = ~1.60 mA/V, good value for transconductance starts at 1.2 mA/V.I have more vintage ECC82, ECC83, E88CC tubes for sale in my other listings. See my other items for more vintage, rare tubes: pairs of AZ11/AZ1/RGN1064 mesh plate rectifiers, NOS TESLA E88CC and ECC802S, ECC803S triodes, NOS NIB 1950s foil getter Tungsram EZ80 singles/pairs, and more... I have too much spare parts, ongoing storage cleaning, dont miss out! Payment: - eBay Managed (mandatory option for seller) - Cash on Pickup - No other method of payment (checks etc.) can be accepted. Terms: This is a private auction and the item described is sold as is, without warranty. All the items are sold from my private collection. Winning bidder must contact me within 3 days after the end of this auction. I expect to receive payment in maximum of 14 days after the end of auction, otherwise I will have to report the non-paying bidder to eBay and ask them for a refund. I am responsible for eBay fees, buyer is responsible for all the fees associated w/shipping, money transfer or customs in the country of destination. I can accept Escrow.com (only for valuable items, of course), but buyer must pay for all the associated fees. Thank you for looking! Please take a look at my other auctions for similar items... Please note: Due to current unavailability of carriers caused by the pandemic, my post office does not temporarily allow shipping to several locations (all are listed in the Shipping Exclusion List on the Shipping and Payments tab). My sincere apologies to all buyers from those locations for the inconvenience. As soon as shipping restrictions are lifted, I will remove those locations from the exclusion list. Shipments to some other locations may be severely delayed. Thank you for your understanding and take care.

Biete eine original alte ECC83 mit Ring-Getter, (siehe Fotos), eine Vorstufen-Elektronenröhre mit sehr sehr guten Werten von RWN* Hörtest geräuscharm! Austauschbar mit: 12AX7... Gemessen mit FUNKE W19: 3,6 / 3,8 mA (105 % / 110%, gut ab 1,9 mA = 60 %)*Röhrenwerk Neuhaus, ehem. Telefunken 1pc. ECC83/ 12AX7 v.v. good with ring getter, tube for preamp / tubeamp PayPal

Biete eine original alte ECC83 mit Ring-Getter, (siehe Fotos), eine Vorstufen-Elektronenröhre mit sehr sehr guten Werten von RWN* Hörtest geräuscharm! Austauschbar mit: 12AX7... Gemessen mit FUNKE W19: 3,6 / 3,8 mA (105 % / 110%, gut ab 1,9 mA = 60 %)*Röhrenwerk Neuhaus, ehem. Telefunken 1pc. ECC83/ 12AX7 v.v. good with ring getter, tube for preamp / tubeamp PayPal

=°=Clic ?Mes autres ventes, all my listings ECC83 Staar (RFT) N.O.S N.I.BStrong test result: 105/107 %>> voir photos, please see photos ! Tube was tested on my calibrated B&K747B Dynamic mutual conductance tester for : shorts / grid emission-leakage-gas mutual conductance & life test if necessary ( good range of the meter scale in % transconductance starts at 65 up to 120 % ) Tubes are guarantied not to be Dead On Arrival and to test as stated in this auction. 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.....

=°=Clic ?Mes autres ventes, all my listingsECC83 RFTOld production >foil gettermight be N.O.S, sold as used..not original boxVoir photos !! Strong test result: 105/112 % Tube was tested on my calibrated B&K747B Dynamic mutual conductance tester for : shorts / grid emission-leakage-gas mutual conductance & life test if necessary ( good range of the meter scale in % transconductance starts at 65 up to 120 % ) Tubes are guarantied not to be Dead On Arrival and to test as stated in this auction. 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.....

=°=Clic ?Mes autres ventes, all my listings2x ECC83 RFTOld production >> foil gettermight be N.O.S, sold as used..not original box.Voir photos !! Strong test result: 103/105 & 109/101 %? Mutual conductance Tubes were tested on my calibrated B&K747B Dynamic mutual conductance tester for : shorts / grid emission-leakage-gas mutual conductance & life test if necessary ( good range of the meter scale in % transconductance starts at 65 up to 120 ) Tubes are guarantied not to be Dead On Arrival and to test as stated in this auction 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...

=°=Clic ?Mes autres ventes, all my listings ECC83 RSD (RFT)N.O.S Very Strong : 117/120+ %>> voir photos, please see photos ! Tube was tested on my calibrated B&K747B Dynamic mutual conductance tester for : shorts / grid emission-leakage-gas mutual conductance & life test if necessary ( good range of the meter scale in % transconductance starts at 65 up to 120 % ) Tubes are guarantied not to be Dead On Arrival and to test as stated in this auction. 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.....

Biete eine original alte ECC83 mit Ring-Getter, (siehe Fotos), eine Vorstufen-Elektronenröhre mit sehr sehr guten Werten von RWN* Hörtest geräuscharm! Austauschbar mit: 12AX7... Gemessen mit FUNKE W19: 3,6 / 3,8 mA (105 % / 110%, gut ab 1,9 mA = 60 %)*Röhrenwerk Neuhaus, ehem. Telefunken 1pc. ECC83/ 12AX7 v.v. good with ring getter, tube for preamp / tubeamp PayPal