Both tubes test balanced at 50 with 36 being the minimum score for a good tube (with 65% life remaining).
Item Tag: 7591A
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⭐USA⭐ TEST NOS RCA 7591a Tube Tested on TV7 U & Sencore Tested at 62@36min
TESTED NOS! TUBE’s TEST RESULT’s TV-7/u Tested! TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES! ( USA ) .
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TWO Amperex 7591A Tubes / Amplitrex Tested 💪 +100% / 1978 Dates / 2% Gm Matched
TWO Amperex 7591A vacuum tubes. Tested on Amplitrex AT-1000 tube tester (fixed bias mode). Matched 78-13 date codes = 1978 week 13. Tubes test at 10800 and 10940 where 6630 micromhos is pass/fail grade.
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Brand New Tung-Sol Reissue 7591A Plate Current Matched Sextet (6) Vacuum Tubes
Power Tubes: Checked for shorts, gas and leaks. We have a vast inventory of thousands and thousands of tubes. Preamp Tubes: Checked for shorts, gas and leaks. Rectifier Tubes: Checked for shorts, gas and leaks.
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Tung-Sol 7591 Made in USA by Sylvania Matched Pair NOS Tubes Boxes Tested TV-7
Matched pair of Tung-Sol 7591 power tubes. Tube markings: TUNG-SOL 7591 MADE IN U.S.A. 3226232-3. Gray plates, top getter, smoked glass, black base. Dealer notations and date codes indicate 1962 production.
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Vacuum Tube, 7591A, Tung-Sol Reissue, Matched Pair, Power
Product Details Vacuum Tube, 7591A, Tung-Sol Reissue, Matched Pair, Power, Package of 2.0000T-7591A-TUNG-MPPackage of 2.0000 Tung Sol 7591A beam-power tube. Made in Russia. Measurement from base to the top of the glass (pins not included in measurement): Slightly under 3″ Not what you’re looking for? Check out our other products in this category:Vacuum Tubes -> PowerClick here to visit our ebay store’s homepage.MeasurementsProduct Measurements:Amplification Factor16.8Body Height2.75 in.Capacitance, grid to plate0.25 pFCapacitance, input10 pFCapacitance, output5.0 pFCathode Current (Ik)85 mAGrid 1 Voltage-10 VGrid Circuit Resistance (Rg), Cathode Bias1.0 MΩGrid Circuit Resistance (Rg), Fixed Bias0.3 MΩHarmonic Distortion13 %Heater Cathode Voltage, Negative200 VHeater Cathode Voltage, Positive100 VHeater Current0.8 AHeater Voltage6.3 VItem Diameter1.28125 in.Item Height3.3125 in.Load Resistance3 kΩPlate Current, max signal (Ia)75 mAPlate Current, zero signal (Ia)60 mAPlate Dissipation (Wa)19 WPlate Resistance (Ra)29 kΩPlate Voltage (Ua)≤ 550 V, 300 V typicalPower Output11 WScreen Current, max signal15 mAScreen Current, zero signal8 mAScreen Dissipation3.3 WScreen Voltage≤ 440 V, 300 V typicalTransconductance (S)10,200 μmhosPackaging Information:Packaging Dimensions4.9 in. x 3.5 in. x 1.8 in.Weight (Packaging)0.2028 lbs.About UsAbout Amplified Parts:Backed by over 30 years of experience serving the electronic hobbyist market, Amplified Parts® provides the parts you need to modify, repair, or build your own audio and musical instrument equipment, from transistor radios to vacuum tube amplifiers, guitar pedals, and modular synthesizers. Our mission is to provide our customers with high quality products from an inventory of over 12,000 unique items, and to share our expertise via our large library of tech articles and equipment build guides.Whether you are building cutting-edge equipment or restoring classic gear with historical accuracy, Amplified Parts® has what you need.We typically ship the same day if your order is placed before 12:00pm Arizona Time Monday through Friday excluding holidays.All packages are insured and we assume responsibility for the shipment until the carrier shows delivery.Click here to visit our ebay storefront.
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Brand New Tung-Sol Reissue 7591A Plate Current Matched Octet (8) Vacuum Tubes
Power Tubes: Checked for shorts, gas and leaks. We have a vast inventory of thousands and thousands of tubes. Preamp Tubes: Checked for shorts, gas and leaks. Rectifier Tubes: Checked for shorts, gas and leaks.
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2pcs matched Audio Valve Vacuum Tube Russia TUNG-SOL 7591A Replace 7591
2pcs matched Audio Valve Vacuum Tube Russia TUNG-SOL 7591A Replace 75912pcs matched Audio Valve Vacuum Tube Russia TUNG-SOL 7591A Replace 75912pcs matched Audio Valve Vacuum Tube Russia TUNG-SOL 7591A Replace 7591PaymentDelivery detailsTerms of salesAbout usContact usPaymentPayPal payment ONLY..Please be sure your shipping address is correct. We will only follow your address listed at the PayPal payment for the shipment.Due to the secure reasons, we are not allowed the address change through email. We have no responsibility for shipping address provided.Payment must be received 7 days after auction ended. Unpaid dispute will be filed to eBay for non- payable bidders.Delivery detailsShip to worldwide excluded some countriesDelivery time:It takes about 7-21 business days on the way Item Will Be Shipped Within 24 hours as soon as your Payment Verified. Some times the date will be delayed due to a shortage. However, we will inform you via the Email. We ship to PayPal’s address ONLY. Please make sure your address in PayPal is correct and available before you pay.Please indicate your personal requirement, such as colors, packages, value of declaration etc, at paypal’s message when you pay to us.Terms of salesThanks for your purchase, hope you have a pleasant buying experience with us, We are honest seller, we are doing best to be a BEST seller, thanks for your support. About usOur production line: New PSVANE SHUGUANG Audio Tubes; NOS tubes made in China, Russia, USA,UK, ect. Resistors and Capacitors. Tube Sockets Guitar AMP Knobs Guitar AMP Handles AMP Speaker Feet Pads All Hifi parts and tubes from us are sold at reasonable price with good quality, price that listed on our website are not inluding shipping cost,shipping charges are based on the quantity of orders and customer’s Location, Welcome to visiting our ebay store! Have a nice day!Contact us新建网页 2 We are doing best to be a good seller, for some unexpected issues, such as the item does not work, or the item you buy wrongly,or you do not receive the item—-any problem with the product or our service, please communicate with us at the first time, thank you!
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Sylvania one pair of 7591A tubes test strong 1 old style and 1 coin base
Sylvania — one pair of 7591A tubes test strong — vintage One is older Sylvania with full dark base and pink writing One is Philips / Sylvania with faded light blue printing on the glass 4500 is “good” and Older tube tests 5000. Newer coin base tube tests 6000 Likely used to some extent If you purchase, you will get the 2 tubes shown in the photos Made in USA US and Canada buyers ONLY. Free shipping, via US Post Office Priority Mail. Will be packed *carefully* prior to free shipping! Check out my other tube listings… I have many old and unusual tubes