Valvo ecc83 mC1 D7E Mullard. Die Röhre ist aus NOS Beständen und wurde zum Funktionstest gebraucht. 1,3/1,4mA 1,2mA = 100% https://www.ebay.de/itm/255273850944?mkcid=16&mkevt=1&mkrid=707-127634-2357-0&ssspo=3a06OD1TSPS&sssrc=4429486&ssuid=N1I2TlJHRby&var=&widget_ver=artemis&media=COPY Bei Fragen oder Anregungen einfach melden Privatverkauf.

Years ago, I put away a bunch of great Tubes. I have decided to sell quite a few off. Please, Check out my other items! No additional shipping charge for more then one tube purchase.______________ Impossible to find1955 Mullard BVA ECC83 12AX7Top Seamed Glass 17mm Plate Brittish Made Blackburn Factory Great LogoSquare GetterEtched code mC1 B5I1955 Blackburn Factory **** Tested on Amplitrex AT-1000Please see photos for results on AmplitrexPlate #1- 108% Emissions, 100% GM, 0.0 GasPlate #2 - 91% Emissions, 87% GM, 0.0 Gas---------------------Also tested on Dan Nelson calibrated Hickok TV/7DThis tube test atTube #1 - Tests at 40/40The minimum for a good ECC83 on TV/7 is 32. Being offered at a very fair Buy It Now. All my tubes are 100% satisfaction Guaranteed.No shorts or leaksBeing offered at a fair Buy It Now.______________________ I have a warehouse full of a lifetime collection of vintage electronics. There are tens of thousands of tubes there. I list them for sale as time permits. All tubes are guaranteed as described. Please, after buying these tubes, Check out my other items for thousands of dollers in tubes and vintage electronics from great names like Amperex, Telefunken, Mullard, RCA, Valvo, GE, Tung Sol, and Western Electric. All Tubes are offered at very fair Buy It Now pricing. ******Shipping Special******* Buy more then one of my tubes and the second, third, and forth set all will ship for free. I will simply pack them all together. You will only pay one shipping charge. This INCLUDES international buyers. All tubes must be purchased at the same time. Shipping will be a flat $4.60 to the USA. I will pack your tube very well for you. Signature will be required upon delivery. International buyers are welcome here. International shipping will be calculated to your country. International buyers please know that you will be responsible for any duty tax your country may charge and all customs forms will be filled out properly.No shipping to Mainland China. No shipping to Italy or Russian FederationBeing offered at a low Buy It Now.

2x Mullard ECC83 Valves Very rare pair of Mullard ECC83 manufactured in 1955 with long-plate and []-getter Date Code: mC1 B5F, mC1 B5F Tested by AVO VCM Tester Valve 1 Ia1 = 1.32(mA), gm1 = 1.55(mA/V) Ia2 = 1.45(mA), gm2 = 1.4(mA/V) Valve 2 Ia1 = 1.23(mA), gm1 = 1.5(mA/V) Ia2 = 1.48(mA), gm2 = 1.45(mA/V) NOS specification: Ia = 1.2(mA), gm = 1.6(mA/V) *** This valve has also been tested in amplifier without any noise. *** Postage Costs I am happy to post this item to worldwide and combine postage cost on multiple purchases. 20230522L001

I have 2 Rare in the original box MC1 Mullard long plate 12ax7 tubes with the 2 supported sqaure D getter.THESE WILL NOT LAST LONG IN MY OPINION THIS IS THE BEST 12AX7 TUBE EVER MADE ESPECIALLY FOR THE MONEY .These tubes test 1300-1300 and 1125-1250 where 875 is the minimum good and 1250 is new on are hickok tube tester

1960s Pye Black Box Tube Valve Amplifier Fitted with 1 x Mullard ECC83 (mC1 B76) ~ 2 x Mulard EL42 ~ 1 x Mulard EZ41 Removed from a working Pye Black Box record player Good used working condition with age related wear and tear Tubes will be removed and packaged seperately for postage Please View Pictures for more Details and Condition as they form a Important Part of the Description For Northern Ireland, Highlands and IslandsPlease ask for a postage quote before purchase

Two Mullard ECC83 Valves / Tubes Batch numbers are MC1 B6B and MC1 BA5 I have tested these in an amplifier and they both work with no signs of being microphonic I do not have a valve tester so I cannot test further.I have sold valves previously tested this way and have always had favourable reports from buyers see my feedback.I have more on my other listings if you win more than one lot please wait for me to send an invoice before paying as I will combine postage cost. I will send Royal Mail Tracked and signed for service. This may not be possible if you buy on the ebay GSP as ebay have full control over this facility. Please see note below. I can send abroad via the ebay Global shipping programme. But please note I do not set the charges for this ebay do. so please make sure you are happy with the charges ebay make for this service before purchase. The delivery time is also down to the GSP I will pack and send promptly but have no control over delivery time on the GSP. Many thanks.

I have 2 Rare in the original box MC1 Mullard long plate 12ax7 tubes with the 2 supported sqaure D getter.THESE WILL NOT LAST LONG IN MY OPINION THIS IS THE BEST 12AX7 TUBE EVER MADE ESPECIALLY FOR THE MONEY .These tubes test 1300-1300 and 1125-1250 where 875 is the minimum good and 1250 is new on are hickok tube tester

I have 2 Rare in the original box MC1 Mullard long plate 12ax7 tubes with the 2 supported sqaure D getter.THESE WILL NOT LAST LONG IN MY OPINION THIS IS THE BEST 12AX7 TUBE EVER MADE ESPECIALLY FOR THE MONEY .These tubes test 1300-1300 and 1125-1250 where 875 is the minimum good and 1250 is new on are hickok tube tester

Valvo ecc83 mC1 D7E Mullard. Die Röhre ist aus NOS Beständen und wurde zum Funktionstest gebraucht. 1,3/1,4mA 1,2mA = 100% https://www.ebay.de/itm/255273850944?mkcid=16&mkevt=1&mkrid=707-127634-2357-0&ssspo=3a06OD1TSPS&sssrc=4429486&ssuid=N1I2TlJHRby&var=&widget_ver=artemis&media=COPY Bei Fragen oder Anregungen einfach melden Privatverkauf.

SUPER RARE EARLY MULLARD ECC83 12AX7 LONG PLATES SQUARE GETTER WITH CODE mC1 B5L - BLACKBURN DECEMBER 1955 IN BEAUTIFUL CONDITION TESTED STRONG UNUSUALLY THIS HAS BOTH PAINT AND ETCHED DATE CODE ??AVO VCM163 TESTED READINGS TUBE 1 - Ia 1.5/1.5 gm 1.6/1.6 100% = Ia 1.2 gm 1.6 ? PLEASE SEE MY OTHER AUCTIONS ?

For sale is a nice early example of the Mullard ECC83 with long anode plates and square getter. This example has fairly good print with all writing still legible and only minor rubbing. Coded MC1 and B7B, this valve was manufactured in the Mullard Blackburn factory in February 1957. This valve has been AVO tested on a recently calibrated 2 panel tester, a very close match between the two triode sections with the following results: A1: just above 1.6mA/V A2: just above 1.6mA/V AVO data lists at 1.6mA/V I have also listened to this valve on a setup which amplifies the ECC83 sections by 400x, this allows me to listen deep within the valve for any noises that could get worse and make themselves apparent later in use. This valve is free from any noise and sounds excellent. Overall a used but great working example of this early Mullard ECC83. Item will be well packaged for postage, offers are welcome.

A Mullard 12AX7 ECC83 valve with long black plates, copper rods and square getter. The Blackburn factory code is mC1 B7C, dating the valve to March 1957. Tested very good. The valve has been tested on the Amplitrex AT1000 and the test results are shown in the photos. Please read the condition section as this forms part of the description. Unpacked weight is 0.010 kg. Note on the gas test reading from the user manual for the tester:In the case of small pre-amp valves anything more the 0.1 milliampere will likely cause problems. With a power tube the interpretation must be different. Power tubes typically show a few milliamperes of gas induced current increase, even if they are good. This is because in these tubes, plate temperatures are generally much higher and there is more surface area on the plate and other tube components which naturally outgas somewhat as it heats up. Also, because these tubes operate with several tens of milliamperes, or even over 100 milliamperes, a few mA of gas current is ok. With power tubes, a gas-induced current increase of less than 10% of normal plate current is ok in most application circuits. For UK Shipping. Please note shipping in the UK where possible will be using Royal Mail. However, due to the new size restrictions implemented by the Royal Mail which has resulted in very large increases in P&P costs for certain items, they will be shipped via courier using a drop centre which will increase the delivery time. For Overseas Shipping. The item will be shipped Signed For for overseas. Packages weighing over 2kg will be sent via International Signed For Courier. Combined postage is offered on all items and is based on the packed weight. Shipping costs for all returns are at the Buyers cost unless the item was misdescribed in the original listing or this was not covered in a subsequent question or revision to the listing. Overseas bidders are responsible for settling any Customs Duties or Fees on items they purchase.

Mullard ECC83, long plate, square getter. Date code mc1 B7F. Tests strong and perfectly balanced; 1.75mA/V / 1.75mA/V (109% / 109%)

WELCOME TO YET ANOTHER GREAT DR-TRON AUCTION.                THIS SALE IS FOR A VINTAGE VALVE TUBE.....   Mullard ECC83 / 12AX7WHITE  PRINT.Square GETTER. Long plates. MADE IN BLACKBURN, Great Britain. Code = mC1-B5C. 1955 VINTAGE. Perfect Balanced tube.TESTS ok / working. Not 100%. 100% = 1.2mAFROM WORKING EQUIPMENT. Please note...... ALL MY TUBES ARE TESTED ON MY CALIBRATED ......  AVO  VCM-163 TUBE TESTER .... BEAR IN MIND ALL TUBE TESTERS GIVE SLIGHTLY DIFFERENT READINGS..... MY READINGS ARE ACCURATE AND HONEST. I  WILL SHIP THIS ITEM WORLDWIDE. PLEASE LOOK AT MY OTHER VINTAGE PARTS AUCTIONS. THANK YOU FOR TAKING TIME TO VIEW MY ITEM, AND GOOD LUCK !!!

WELCOME TO YET ANOTHER GREAT DR-TRON AUCTION.                THIS SALE IS FOR A VINTAGE VALVE TUBE.....   Mullard ECC83 / 12AX7WHITE  PRINT.Square GETTER. Long plates. MADE IN BLACKBURN, Great Britain. Code = mC1-B6F1956 VINTAGE. Perfect Balanced tube.TESTS 90% Approximate. A1 = 1.00mA. A2 = 0.95mA ..... 100% = 1.2mA.FROM WORKING EQUIPMENT. Please note...... ALL MY TUBES ARE TESTED ON MY CALIBRATED ......  AVO  VCM-163 TUBE TESTER .... BEAR IN MIND ALL TUBE TESTERS GIVE SLIGHTLY DIFFERENT READINGS..... MY READINGS ARE ACCURATE AND HONEST. I  WILL SHIP THIS ITEM WORLDWIDE. PLEASE LOOK AT MY OTHER VINTAGE PARTS AUCTIONS. THANK YOU FOR TAKING TIME TO VIEW MY ITEM, AND GOOD LUCK !!!

ECC83 12AX7 MULLARD G.Britain, Blackburn Plant.Code on glass= mC1 B7E, May-1957Long plates, Square getter [].Great audio tube, this version is well known as a top level,among the best ECC83 ever made.Tested ok on TV7-A/UValues tested = 42 - 43.Min. Good Recomm. 12AX7 ECC83 = 32 - 32 (65%), nos = 48Combined shipping is accepted. Shipping well packed by International postal post, certificated & registered. Tracking & Signed to delivery.

Quad of very rare Mullard ECC 33 MC1 Valves . These have has been tested by a professional tester on an AV valve tester (see photographs for details) All tested very strongly and described as 'New' Emission :Good All MC1 MC1 B7I MC1 B5K MC1 B5I MC1 B5L NOS Only opened to photograph

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% triode 1 13.8/32 PC 1.5 triode 2 12.3/32 PC 1.3 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.

ECC83 12AX7 MULLARD G.Britain, Blackburn Plant.Code on glass= mC1 B7E, May-1957Long plates, Square getter [].Great audio tube, this version is well known as a top level,among the best ECC83 ever made.Tested ok on TV7-A/UValues tested = 42 - 43.Min. Good Recomm. 12AX7 ECC83 = 32 - 32 (65%), nos = 48Combined shipping is accepted. Shipping well packed by International postal post, certificated & registered. Tracking & Signed to delivery.

VERY RARE STRONG PAIR OF MULLARD CV492 ECC83 12AX7 mC1 LONG PLATES SQUARE GETTER BOTH HAVE THE SAME mC1 B5E DATE CODE FROM MAY 1955 BOTH TESTED SUPER STRONG ??AVO VCM163 TESTED READINGS TUBE 1 - Ia 1.8/1.57 gm 1.9/1.9 TUBE 2 - Ia 2.1/1.75 gm 2.0/2.0 100% = Ia 1.2 gm 1.6 ? PLEASE SEE MY OTHER AUCTIONS ?

WELCOME TO YET ANOTHER GREAT DR-TRON AUCTION.                THIS SALE IS FOR A VINTAGE VALVE TUBE.....   Mullard ECC83 / 12AX7WHITE  PRINT.Square GETTER. Long plates. MADE IN BLACKBURN, Great Britain. Code = mC1-B7D. 1957 VINTAGE. Perfect Balanced tube.TESTS 100%..A1 = 1.40mA. A2 = 1.38mA..... 100% = 1.2mA.FROM WORKING EQUIPMENT. Please note...... ALL MY TUBES ARE TESTED ON MY CALIBRATED ......  AVO  VCM-163 TUBE TESTER .... BEAR IN MIND ALL TUBE TESTERS GIVE SLIGHTLY DIFFERENT READINGS..... MY READINGS ARE ACCURATE AND HONEST. I  WILL SHIP THIS ITEM WORLDWIDE. PLEASE LOOK AT MY OTHER VINTAGE PARTS AUCTIONS. THANK YOU FOR TAKING TIME TO VIEW MY ITEM, AND GOOD LUCK !!!

WELCOME TO YET ANOTHER GREAT DR-TRON AUCTION.                THIS SALE IS FOR A VINTAGE VALVE TUBE.....   Mullard ECC83 / 12AX7WHITE  PRINT.Square GETTER. Long plates. MADE IN BLACKBURN, Great Britain. Code = mC1-B7I. 1957 VINTAGE. Balanced tube.TESTS 100%..A1 = 1.65mA. A2 = 1.50mA..... 100% = 1.2mA.FROM WORKING EQUIPMENT. Please note...... ALL MY TUBES ARE TESTED ON MY CALIBRATED ......  AVO  VCM-163 TUBE TESTER .... BEAR IN MIND ALL TUBE TESTERS GIVE SLIGHTLY DIFFERENT READINGS..... MY READINGS ARE ACCURATE AND HONEST. I  WILL SHIP THIS ITEM WORLDWIDE. PLEASE LOOK AT MY OTHER VINTAGE PARTS AUCTIONS. THANK YOU FOR TAKING TIME TO VIEW MY ITEM, AND GOOD LUCK !!!

2x Mullard ECC83 Valves Very rare pair of Mullard ECC83 manufactured in 1955 with long-plate and []-getter Date Code: mC1 B5F, mC1 B5F Tested by AVO VCM Tester Valve 1 Ia1 = 1.32(mA), gm1 = 1.55(mA/V) Ia2 = 1.45(mA), gm2 = 1.4(mA/V) Valve 2 Ia1 = 1.23(mA), gm1 = 1.5(mA/V) Ia2 = 1.48(mA), gm2 = 1.45(mA/V) NOS specification: Ia = 1.2(mA), gm = 1.6(mA/V) *** This valve has also been tested in amplifier without any noise. *** Postage Costs I am happy to post this item to worldwide and combine postage cost on multiple purchases. 20230522L001

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% triode 1 13.8/32 PC 1.5 triode 2 12.3/32 PC 1.3 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.