Full Sleeve of 5 electrically and physically matched vintage NOS/NIB GE 6J6A/ECC91 vacuum tubes made in USA. Electrically test using a calibrated Sencore MU150 Continental II Vacuum Tube tester. These tubes test AS-NEW and have never been used. Due to the nature of vintage vacuum tube electronics, these tubes are being sold for parts AS-IS and will be properly packed for shipping. Please check my extensive feedback rating for confidence.

  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:                                MULLARD PRODUCTION CITY:                                        TUBE TYPE:    6J6 ECC91 DESIGNATION:                                                 YEAR:     1960s MONTH:      Date code match    SINGLE SILK SCREEN CONDITION %:                   100% MICA:   2 PLATES:   GREY GM%:   120% SINGLE/PAIR/QUAD/MULTI:   SINGLE GETTER:                                                         O GETTER DATE CODE                                                      Normal 0 false false false EN-US X-NONE X-NONE ONE TUBE NOS NIB   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

2 Eico 6J6 ECC91 Vacuum Tubes <><><><><><><><><><><><><><><><><><><>Tested on a Hickok 6000A MicromhosNominal New= 3000/3000Min = 1800/1800Results = 4100/3400 =2880/3100 USA Shipping $6 I have many other types of tubes Please Search My Store ~~~ No Additional Shipping Charges All tubes Guaranteed?????? Thank You! ?????? 803~~~~ Please click on the link below to view more items in my store. ~~~~~~~~ GreenGirls Guaranteed VintageTubes

MULLARD ECC91 VALVE TUBE FILAMENT TESTS OK I SHIP WORLDWIDE. PLEASE ASK FOR SHIPPING COSTS BEFORE BIDDING. UK HIGHLANDS AND ISLANDS PLEASE EMAIL ME BEFORE PAYING, THANK YOU.

Trio Of ECC91 Mullard Valves Tubes Cash on collection permitted, Im based in Loughborough, Leicestershire, which is Junction 23/24 on the M1. P&P is FREE to mainland UK

Trio Of ECC91 Mullard Valves Tubes Cash on collection permitted, Im based in Loughborough, Leicestershire, which is Junction 23/24 on the M1. P&P is FREE to mainland UK

Elektronenrhre z. B. Fa RAYTHEON - Typ: 6J6 = ECC91 / 2 fach Triode / NOS. Vintage Elektronenrhre z. B. Fa RAYTHEON - Typ: 6J6 = ECC91 / 2 fach Triode / NOS - aus US-Army Service-Werkstatt! Hersteller RAYTHEON u.a. / USA 1. Herstellung ab 1942 Beschreibung Sockel Miniatur-7-Stift Heizung Uf 6.3 V ~= / If 0.45 A / Indirekt Zustand gebraucht, geprft=Heizfaden hat Durchgang, VP Lieferumfang 1 Stck mit oder ohne VP Anwender: Radio/TV-Empfang etc. Anmerkung zur Offerte: Der Heizfaden hat Durchgang! (Emission ist da) / Von mir knnen die folgende Tests nicht vorgenommen und daher keine Garantie gegeben werden; fr: - Gerusch-Test - Mikrophonie-Test - Gain Test - Akustische Tests - Sto-Test - Abhr-Test - Gleichmige Signalstrke/ Leistungs-Test! (Ich bitte um Verstndnis!) Versand auerhalb der EU oder Abholung nach Absprache!

You are bidding for 10 pieces 6J6 tubes different brands. Tubes were tested on Funke W19 tube tester within good values. Check actual pictures for details. You can see measured values on stickers. Check actual photos for details. Private selling. I’ll prepare good package and post worldwide, but will not assuming responsibility for tube damage during postage due age and gently specific. Payment should be done within 3 days. Bid accordingly with posted above. Contact seller for any questions. Check my other power tube auctions. Happy bidding. Dont loose opportunity.

2 StückRöhre 6J6 = ECC91vermutlich RCA Gebraucht & UngetestetSiehe Bilder ohne KartonKeine Garantie!

Welcome to Vacuum Tube Depot llc! We have been one of the leading online suppliers of vacuum tubes for many years. Recently, we acquired a very large collection of tubes that we are excited to offer. We have tested and sold thousands of these tubes, and have many, many more to sell. After testing literally thousands of tubes from this collection, we have found only a small handful that did not test well. The vast majority tested strong. Buy with confidence, and if you are not happy with your purchase, you can send it back on your dime for a refund. We will combine shipping on multiple purchases within 5 days of the first auction ending. Payment must be made within 5 days or your purchase will be canceled and re-listed. We do not have the space to hold onto auctions for you for any longer than this. If you would like combined shipping, please wait to make payment until after we have sent your invoice. We send invoices each day after all auctions have ended for that day. Combined shipping can only be combined with this shop, not other shops with similar names. Thank you for shopping with Vacuum Tube Depot llc! We have tons of these flats loaded with tubes. We opened maybe tons boxes to make sure tubes matched the boxes, out of all the boxes we opened. Most matched, but several had the correct number but different brand from box. Sold as is

i am back from holidays (will list the sun tan later!) this is one of a large number of radio /tv valves i will be listing i ship worldwide and like most vampires i do combined postage. Auctions are for ONE valve unless stated otherwise (ebay wants 3 pictures)

i am back from holidays (will list the sun tan later!) this is one of a large number of radio /tv valves i will be listing i ship worldwide and like most vampires i do combined postage. Auctions are for ONE valve unless stated otherwise (ebay wants 3 pictures)

Elektronenrhre z. B. Fa RAYTHEON - Typ: 6J6 = ECC91 / 2 fach Triode / NOS. Vintage Elektronenrhre z. B. Fa RAYTHEON - Typ: 6J6 = ECC91 / 2 fach Triode / NOS - aus US-Army Service-Werkstatt! Hersteller RAYTHEON u.a. / USA 1. Herstellung ab 1942 Beschreibung Sockel Miniatur-7-Stift Heizung Uf 6.3 V ~= / If 0.45 A / Indirekt Zustand gebraucht, geprft=Heizfaden hat Durchgang, VP Lieferumfang 1 Stck mit oder ohne VP Anwender: Radio/TV-Empfang etc. Anmerkung zur Offerte: Der Heizfaden hat Durchgang! (Emission ist da) / Von mir knnen die folgende Tests nicht vorgenommen und daher keine Garantie gegeben werden; fr: - Gerusch-Test - Mikrophonie-Test - Gain Test - Akustische Tests - Sto-Test - Abhr-Test - Gleichmige Signalstrke/ Leistungs-Test! (Ich bitte um Verstndnis!) Versand auerhalb der EU oder Abholung nach Absprache!

2 StückRöhre 6J6 = ECC91vermutlich RCA Gebraucht & UngetestetSiehe Bilder ohne KartonKeine Garantie!