RAYTHEON UNILINE 6SN7GTB *BOGEYS*LEGENDARY TOUGH DOGSCHROME TOPPED RINGED HALOSHEAVY OUTER STEEL RODS2 HOLE GRAY LADDER PLATESDUAL COPPER RODSPERFECTLY MATCHED SET Extremely Rare - NIB - MINT (Ships In *Reproduction Boxes) ??? Amazing Historic Vintage Tubes ???Coded: M04 K04Short Black BaseGold LabelSet of Two (2) Tubes Made In the U.S.A. ??? These Tubes are Very Rare in Brand New Condition ??? BEST TUBES ON THE MARKET... NO SHORTS... NO LEAKS... ??? HICKOK TESTED ???Tested on Hickok 750 for Emission, Mutual ConductanceWhere 50 mA is Good these tubes peg at 78/85 for EmissionWhere 2,600 ?A is Good these tubes peg at 3,000/3,200 for Mutual ConductanceTube 1. K24 Plate 1. - 80 mA - 3,000 ?A at Idle - NOS Plate 2. - 85 mA - 3,200 ?A at Idle - NOSTube 2. M24 Plate 1. - 82 mA - 3,000 ?A at Idle - NOS Plate 2. - 78 mA - 3,000 ?A at Idle - NOSPerfectly Balanced - Rare and Exceptional - Full Tonal Range THESE TUBES WERE MADE FOR HIGH FIDELTYZERO HOURS - VERY POWERFUL EMISSION All of my Tube Inventory is Boxed and Thoroughly Tested... *Test Ratings are Specific to My Fully Calibrated Test Equipment!The tubes are put through a Life Test and each plate is warmed and measured for emission, leaks and shorts! Each tube is thoroughly inspected, they are described accurately and listed based on fair value... My Return Policy: 30 Days - Seller pays return shipping! All tubes are Guaranteed to be as described... You can buy with complete confidence! Please read listing thoroughly and ask any questions prior to purchase... Tube rolling will not be tolerated! Any and all returns must be in identical condition as when they were received... Test Driving Vintage NOS Tubes is completely unacceptable and highly unethical! Buyer will be charged for mishandled and damaged returns... All tubes manufactured emit some type of sound, hum or slight microphonic! Noisy tubes would always be auctioned or tossed... I mark every tube in order to avoid tube rolling! Variations in Line Output and Test Equipment excludes any claims regarding matching test results on any equipment other than mine... *Test results from different Test Equipment IS NOT Guaranteed!International Buyers Welcome! I use eBay Global and USPS 1st Class International exclusively, unless otherwise stated... I am unable to change declared value on customs forms, and International Buyers are responsible for all taxes, customs and additional fees! Each tube is fully insured, boxed and shipped safely... ? Expedited Shipping ?? Shipping times may vary based on region ?? *Honesty, *Reliability and *Integrity are *Everything ?

OUR INSTRUMENTS ARE CALIBRATED WITH REFERENCE TUBES AND POWERED WITH UPS LINE VOLTAGE FOR A MORE ACCURATE AND STABLE MATCHING PROCESSFor English Language see below 6SN7GTB RAYTHEON Black Plates Halo Getter Matched TubesMADE IN USA ’59 Queste RAYTHEON hanno una buona dinamica, forniscono una gran quantità di dettagli senza essere dure negli acuti e hanno molta presenza intorno agli strumenti. Sono simili alle Sylvania ma il medio-alto risulta più esteso e con una maggior capacità di far ascoltare meglio i dettagli più piccoli o più arretrati senza suonare troppo brillanti o taglienti, né eccessivamente suadenti. Meno incisive sulla parte bassa dello spettro senza però perdere in estensione o articolazione. Questo è un altro tubo che permette di godersi la musica perdendo la cognizione del tempo. Stesso lotto di produzione:P280C 59-29 Testate su AVO VCM 163 Tube tester:Voltage Test: Va = 250V, Vg = -8VMedia 100% Gm = 2600 ; Ia = 9 mARISULTATO DEL TEST: FORTE Valvola 1:Sezione 1: Gm 2300 ; Ia = 7,1 mASezione 2: Gm 2300 ; Ia = 6,7 mAValvola 2:Sezione 1: Gm 2400 ; Ia = 7,5 mASezione 2: Gm 2400 ; Ia = 7,8 mAValvola 3:Sezione 1: Gm 2200 ; Ia = 6,0 mASezione 2: Gm 2200 ; Ia = 6,0 mAValvola 4:Sezione 1: Gm 2250 ; Ia = 6,7 mASezione 2: Gm 2300 ; Ia = 6,8 mA Ulteriori test eseguiti:Test MicrofoniaQualità dellEmissione Test per Cortocircuiti Spedizione con imballo protetto per una maggiore sicurezza.Imballaggio in carta riciclata e riciclabile. Nastro adesivo di chiusura in carta marrone - ECO-KRAFTEco compatibile - SOLVENT FREE 6SN7GTB RAYTHEON Black Plates O Getter Matched TubesMADE IN USA 59 These RAYTHEONs have good dynamics, provide a lot of detail without being harsh in the treble and have a lot of presence around the instruments. They are similar to the Sylvania but the mid-high is more extended and with a greater ability to make smaller or more recessed details better heard without sounding too bright or sharp, or excessively persuasive. Less incisive on the lower part of the spectrum without losing extension or articulation. This is another tube that allows you to enjoy music while losing track of time. Same Data codes:P280C 59-29 Tested on AVO VCM 163 Tube tester:Voltage Test: Va = 250V, Vg = - 8VAverage 100% Gm = 2600; Ia = 9 mATEST RESULT: STRONG Tube 1:Section 1: Gm 2300 ; Ia = 7,1 mASection 2: Gm 2300 ; Ia = 6,7 mATube 2:Section 1: Gm 2400 ; Ia = 7,5 mASection 2: Gm 2400 ; Ia = 7,8 mATube 3:Section 1: Gm 2200 ; Ia = 6,0 mASection 2: Gm 2200 ; Ia = 6,0 mATube 4:Section 1: Gm 2250 ; Ia = 6,7 mASection 2: Gm 2300 ; Ia = 6,8 mA Further tests performed:Microphonicity TestEmission QualityShort Circuit TestShipment with protected packaging for greater safety.Packaging in recycled and recyclable paper. Adhesive closure tape in brown paper - ECO-KRAFTEco compatible - SOLVENT FREE

Beautiful used RAYTHEON 6SN7GTB tube. Black ladder plates. Short envelope. Tested on military TV7 tube tester. With 50 being minimum reading for a good tube , this tube reads comparable to new and nicely balanced at 122/124. FREE U.S. SHIPPING ! Thank you for looking !!!

Tube is used. Tube tested on Amplitrex AT1000 (Fixed Bias Setting). Test result is on sticker in the Emis %. Emis & GM baseline for new tube is 100%. Good quality tube reading is 80% to 100%. Tubes stronger than the baseline will have reading over 100%. Will combine shipping with other items I have listed on eBay _gsrx_vers_1545 (GS 9.4.1 (1545))

4 Vintage 1952 Raytheon USA Black Plate 6SN7GTB Vacuum tubes! Please see the detailed pictures 4 Vintage 1952 Raytheon USA 6SN7GTB Vacuum tubes..Tubes are testing within NOS range and have been matched for current draw. They feature black Plates with side getters.Tubes have been tested on a Calibrated Hickok TV7 tube tester and test as follows:Tube1 : 109.9/109.5 Tube2 : 111.3/108.2 Tube3 : 110.3/113.2 Tube4 : 108.8/110.5 Minimun good value on a TV7 tester for a 6SN7 tube is 50. The tubes test within the NOS range.Tubes are guaranteed to be in good working order upon delivery. If a tube ends up bad within 1 week of delivery just ship it back for a full refund on the bad tube minus shipping costs. See pictures for details. If you have any questions please email. I will ship worldwide.Buyer to pay all shipping costs including brokerage and taxes if any. Item is located in Canada but will be shipped with the USPS for USA buyers or Canada Post for Canadian buyers. For overseas buyers : Please email for options as sometimes Canada post is cheaper for overseas shipping with Surface post. Please wait for my invoice before paying to avoid any hassles. I do combine shipping to save you costs! See my other auctions for more vintage audio gear! Local pickup in Vancouver BC is also available. GOOD LUCK!!!!!!!

4 Vintage 1952 Raytheon USA Black Plate 6SN7GTB Vacuum tubes! Please see the detailed pictures 4 Vintage 1952 Raytheon USA 6SN7GTB Vacuum tubes..Tubes are testing within NOS range and have been matched for current draw. They feature black Plates with side getters.Tubes have been tested on a Calibrated Hickok TV7 tube tester and test as follows:Tube1 : 115.5/105.3 Tube2 : 112.0/105.3 Tube3 : 109.0/104.9 Tube4 : 113.3/106.6 Minimun good value on a TV7 tester for a 6SN7 tube is 50. The tubes test within the NOS range.Tubes are guaranteed to be in good working order upon delivery. If a tube ends up bad within 1 week of delivery just ship it back for a full refund on the bad tube minus shipping costs. See pictures for details. If you have any questions please email. I will ship worldwide.Buyer to pay all shipping costs including brokerage and taxes if any. Item is located in Canada but will be shipped with the USPS for USA buyers or Canada Post for Canadian buyers. For overseas buyers : Please email for options as sometimes Canada post is cheaper for overseas shipping with Surface post. Please wait for my invoice before paying to avoid any hassles. I do combine shipping to save you costs! See my other auctions for more vintage audio gear! Local pickup in Vancouver BC is also available. GOOD LUCK!!!!!!!

2 Vintage 1952 Raytheon USA Black Plate 6SN7GTB Vacuum tubes! Please see the detailed pictures 2 Vintage 1952 Raytheon USA 6SN7GTB Vacuum tubes..Tubes are testing within NOS range and have been matched for current draw. They feature black Plates with side getters.Tubes have been tested on a Calibrated Hickok TV7 tube tester and test as follows:Tube1 : 109.6/108.0 Tube2 : 105.6/110.6 Minimun good value on a TV7 tester for a 6SN7 tube is 50. The tubes test within the NOS range.Tubes are guaranteed to be in good working order upon delivery. If a tube ends up bad within 1 week of delivery just ship it back for a full refund on the bad tube minus shipping costs. See pictures for details. If you have any questions please email. I will ship worldwide.Buyer to pay all shipping costs including brokerage and taxes if any. Item is located in Canada but will be shipped with the USPS for USA buyers or Canada Post for Canadian buyers. For overseas buyers : Please email for options as sometimes Canada post is cheaper for overseas shipping with Surface post. Please wait for my invoice before paying to avoid any hassles. I do combine shipping to save you costs! See my other auctions for more vintage audio gear! Local pickup in Vancouver BC is also available. GOOD LUCK!!!!!!!

2 Vintage 1952 Raytheon USA Black Plate 6SN7GTB Vacuum tubes! Please see the detailed pictures 2 Vintage 1952 Raytheon USA 6SN7GTB Vacuum tubes..Tubes are testing within NOS range and have been matched for current draw. They feature black Plates with side getters.Tubes have been tested on a Calibrated Hickok TV7 tube tester and test as follows:Tube1 : 102.9/109.8 Tube2 : 107.3/109.7 Minimun good value on a TV7 tester for a 6SN7 tube is 50. The tubes test within the NOS range.Tubes are guaranteed to be in good working order upon delivery. If a tube ends up bad within 1 week of delivery just ship it back for a full refund on the bad tube minus shipping costs. See pictures for details. If you have any questions please email. I will ship worldwide.Buyer to pay all shipping costs including brokerage and taxes if any. Item is located in Canada but will be shipped with the USPS for USA buyers or Canada Post for Canadian buyers. For overseas buyers : Please email for options as sometimes Canada post is cheaper for overseas shipping with Surface post. Please wait for my invoice before paying to avoid any hassles. I do combine shipping to save you costs! See my other auctions for more vintage audio gear! Local pickup in Vancouver BC is also available. GOOD LUCK!!!!!!!

This auctionis for a Matched Quad of Raytheon Tough Dog 6SN7GTB Preamp Tubes. These tested high on our Knight 600C tester, and have matching date codes and test results. Please see pictures and ask any questions. Thanks! Knight 600C Tested: 93/95, 94/94, 94/93, 93/94 Minimum: 46 Black Plate Side D Getter

Please, after buying these tubes, Check out my other items. I will always combine shipping to save you money._____________Pair NOS NIBRaytheon 6SN7GTB TubesExcellent tubesThese are still NOS. Great tubes. tested on my calibrated Hickok TV/7D. These tubes test at-93/88 95/88that is approx120%/114% 123%/114%the minimum for a 6SN7 tube is 50 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.______________________ Please, after buying these tubes, Check out my other items for thousands of dollars 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 $6.60 to the USA. I will pack your tubes very well for you. 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 Federation.Being offered at a low Buy It Now.

Large lot of 39 Vacuum Tubes Raytheon / Baldwin 6SN7GTB 6SN7GTA VT-231 Includes: 39 - Raytheon / Baldwin Mix lot of - VT - 231 6SN7GTB 6SN7GT 6SN7GTA 6SN7GT Not tested sold AS IS parts or repair. We bought these from a retired repairman estate sale and have no way to check them. You will receive all the vacuum tubes in the pictures. They are packaged up well with bubble wrap so the glass doesnt break.

2 Raytheon 6SN7GT 6SN7GTB tubes, Parallel Plates. AT1000 Tested These are both 6SN7GTB tubes. Tubes were checked for noise and microphonics One of the well known attributes of the Amplitrex is the sensitivity it has for gas testing. It is likely other tube testers will show no gas at all for these tubes. Amplitrex AT1000 results. New tube spec mhos is 2600/2600 at 250 Plate Volts.Tube Emissions %GM % mhosH-K uAGas mA6SN7GTB92/88103/1032700/27000/0.2/.26SN7GTB108/111100/1002600/26000/0.8/.8 Acceptable practice is to have the gas below 1ma. So these are within the good range. Cleaning the tubes is being left to the buyer since often cleaning the tubes also removes labeling.Results are written on the tubes. These can be easily removed with a moist paper towel. Domestic purchases can be combined to reduce shipping costs. International shipping is through the ebay Global Shipping Program. This program may not combine shipping. Contact eBay to find out. Items usually ship the day after payment is received.

Vintage Raytheon 6SN7GTB Vacuum Tube Halo Getter. Tested Stronger than NOS. 3450/3500 (NOS spec 2600) 132-134%

A 6SN7 tube testing at 1650 and above is considered functioning as a new tube. Those testing below 1650 will work fine in old radios. Showing in the photos are the values of each plate.

Untitled Document 1955 Raytheon 6SN7GTB ECC33 Tubes, Matched Quad, NOS Testing, Matched Codes You are bidding on a matched quad of 1955 Raytheon 6SN7GTB ECC33 tubes. These tubes have long black ladder plates and D getters at the top. They have matching 1955 date codes. These were tested on my Dan Nelson calibrated TV-7B. They have been tested for shorts, gas, and transconductance. The tubes test with readings of 102/108, 100/95, 98/105 and 100/98. Minimum is 50. They have been sonically tested in my DIY pre-amp and are quiet with no microphonics. All tubes are tested on my calibrated TV-7/B or on my calibrated Hickok 539C. All of these tubes have been tested for transconductance, shorts, gas, leakage and life. All tubes meet or exceed manufacturer published specifications of transconductance (Gm) for the specified tube type. All tests are tested twice - prior to the listing and prior to shipping. I have been selling tubes on the internet since 1998 and have been working with tubes since the early 1960s. If you have not already done so, please take a moment and look at my feedback. All tubes are 100% guaranteed good on arrival. These are great tubes for your new audio gear, guitar amps and vintage stereo/audio gear. Thanks for viewing my auction. Please check out my other auctions for more audio tubes, ham radio and radio related items, and collectibles for great deals. You can add me to your list of favorite sellers by clicking here. I will ship overseas Regarding Shipping Your tubes will be well packed. All tubes are shipped in white boxes or the original boxes if available. They are than are wrapped in bubble wrap and shipped in a box. I have shipped thousands of tubes all over the world and have not yet had any arrive damaged. Payment must be received with 2 days of the auction close. Foreign bidders are welcome to bid. I will gladly combine auctions to save on shipping when possible. I have sold and shipped electronic equipment and tubes to over 73 countries. I pack items very well. See my feedback and bid with confidence!

Raytheon 6SN7GTB Test NOS Black Plates Chrome Top. Test results 109/112 with a min of 50 on my TV7D/U Check my other tubes Many times when the priority service is just 2/3 dollar extra I pay the difference

Three (3) 6SN7GTB Raytheon vintage vacuum tubes, made in USA, all are black ribbed plates, clear top, side rectangular getter, made in 1960s, tubes tests: 90, 90 %88, 88 %90, 90 % Price is for all tubes pictured. We test all tubes we sell! We will combine shipping! Check out my other tubes!Scale 1-100, good quality percentage on my Triplett starts at 54.

Untitled Document 1955 Raytheon 6SN7GTB ECC33 Tubes, Matched Quad, NOS Testing, Matched Codes You are bidding on a matched quad of 1955 Raytheon 6SN7GTB ECC33 tubes. These tubes have long black ladder plates and D getters at the top. They have matching 1955 date codes. These were tested on my Dan Nelson calibrated TV-7B. They have been tested for shorts, gas, and transconductance. The tubes test with readings of 102/108, 100/95, 98/105 and 100/98. Minimum is 50. They have been sonically tested in my DIY pre-amp and are quiet with no microphonics. All tubes are tested on my calibrated TV-7/B or on my calibrated Hickok 539C. All of these tubes have been tested for transconductance, shorts, gas, leakage and life. All tubes meet or exceed manufacturer published specifications of transconductance (Gm) for the specified tube type. All tests are tested twice - prior to the listing and prior to shipping. I have been selling tubes on the internet since 1998 and have been working with tubes since the early 1960s. If you have not already done so, please take a moment and look at my feedback. All tubes are 100% guaranteed good on arrival. These are great tubes for your new audio gear, guitar amps and vintage stereo/audio gear. Thanks for viewing my auction. Please check out my other auctions for more audio tubes, ham radio and radio related items, and collectibles for great deals. You can add me to your list of favorite sellers by clicking here. I will ship overseas Regarding Shipping Your tubes will be well packed. All tubes are shipped in white boxes or the original boxes if available. They are than are wrapped in bubble wrap and shipped in a box. I have shipped thousands of tubes all over the world and have not yet had any arrive damaged. Payment must be received with 2 days of the auction close. Foreign bidders are welcome to bid. I will gladly combine auctions to save on shipping when possible. I have sold and shipped electronic equipment and tubes to over 73 countries. I pack items very well. See my feedback and bid with confidence!

A 6SN7 tube testing at 1650 and above is considered functioning as a new tube. Those testing below 1650 will work fine in old radios. Showing in the photos are the values of each plate.

One (1) 6SN7GT Raytheon vintage vacuum tube, made in USA, tube has black ribbed hanging plates,clear top, bottom side rectangular getter, there is a crack in the base, tube tests: 88, 88 % Price is for all tubes pictured. Tube did not have original box, I assume it as used. Scale 1-100, good quality percentage on my Triplett starts at 54. We test all tubes we sell! We will combine shipping! Check out my other tubes!

Vintage Raytheon 6SN7GTB Vacuum Tube Halo Getter. Tested Stronger than NOS. 3450/3500 (NOS spec 2600) 132-134%

This new old stock-testing, new in box matched pair of Raytheon 6SN7GTB with Gray Ladder Plates and Top Halo Getter vacuum tubes was tested on our recently calibrated TV-7/U. Tubes measured: Tube One: 76 / 80 (Raytheon 6SN7GTB stenciled and etched on glass)Tube Two: 84 / 78 (Raytheon 6SN7GTB stenciled and etched on glass) Minimum is 50 (65%); 75 = 100%. TV-7/U calibrated December 2021. As a percentage, these tubes test as follows: Tube One 101% / 107%Tube Two 112% / 104%Listened to them in our Alan Eaton amplifier and they sound outstanding (see pics); are dead quiet when the amps are muted; and have excellent frequency response, sound-staging, presence and dynamics. Pair have gray ladder plates, top halo getter, dimpled and silver tops. Tight on bases with no debris or rattling sounds. Check out our eBay store for more tubes for your equipment needs. Tubes ship via United States Postal Service (USPS) First Class Mail with tracking for domestic U.S. sale; Priority is an option. International orders ship via eBay International Shipping. Package weighs eight (8) ounces. Combined shipping always welcomed.TUBES ARE GUARANTEED GOOD AND IN WORKING ORDER AT SHIPMENT. TRANSIT VIA POST CAN DAMAGE TUBES. THIS IS NO FAULT OF OURS BUT THE THIRD PARTY ENTITY THAT IS DELIVERING ITEM(S) TO YOU, I.E, USPS, UPS, FEDEX, YOUR NATIONAL CARRIER IF INTERNATIONAL, ETC. PLEASE INSURE THEM! WE CANNOT GUARANTEE FAILURES ON YOUR EQUIPMENT AFTER POWER UP AS THERE IS NO WAY TO ASCERTAIN HOW TUBES WILL INTERACT WITH YOUR ELECTRONICS; NOR IS THERE A WAY TO DETERMINE WHETHER THEY MAY HAVE FATAL FLAWS IN TUBES THEMSELVES! THESE ARE USED VACUUM TUBES AND TIME MAY HAVE TAKEN A TOLL ON THEM OVER THE MANY YEARS SINCE THEY WERE MANUFACTURED. WE CAN ONLY TEST FOR THE PARAMETERS MENTIONED ABOVE IN ONE OR MORE OF THE FOLLOWING EQUIPMENT WE USE FOR MEASURING: TV-7/U, JACKSON 648 & MAXI MATCHER 2.

Pair of Raytheon 6SN7GTB Vacuum Tubes NOS

Tested Trio of 6SN7GTB Tall Bottle Raytheon Uniline Audio Receiver Preamp Vacuum Tubes Country of origin: USA Production era: 1950s Model: 6SN7GTB Manufacturer: Raytheon Type: Preamp Plate type: black ladder Base type: Octal base (8-pin) Spacers: two Getter frame: halo wire Getter flash: top Glass: clear Stencils: excellent Construction: same configuration Condition: Excellent vintage condition Usage (estimate): minimal Quantity: 3 Please review the photos for more detail Test results: Strong balanced NOS results for Gm: 2.70 / 2.55, 2.55 / 2.4 and 2.8 / 2.8 For Gm, the suggested minimum value is: 1.7 Shorts: No shorts were detected For testing, a calibrated Triplett 3444A tester was used Compatibility: Suitable for audio pre-amplification and vintage tube-based equipment ideal for use in guitar amplifiers, preamps and audio recording equipment. The tube will be carefully packed to ensure safe shipping Estimated delivery time within the USA is 3 to 7 business days Standard shipping service is US Postal 1st class Shipping is combined when applicable Please feel free to reach out if you have any questions or require additional information