GE 7591A tube. (DS, EL34 box).
Item Tag: United States
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1 GE 7591 7591A Vacuum Tube Tested NOS Calibrated TV – 7
This tester also is used in conjunction with a variac to maintain test results accuracy and consistency. This tube tested at- 68. Average new tube value – 56. I will always list original photos of actual item you are receiving.
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1x NOS GE USA 7591A Vintage Power Tube / w/ OE Box Classic / Several in Stock
Introduced in 1963, the legendary 7591a was an improved design w/ better screen dissipation and a low-loss base. warm rich sound reproduction w/ grey plate internals, live-concert holographic sound reproduction w/ vinyl style intimacy.
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TWO Amperex 7591A Tubes / Amplitrex Tested Good Pair / 1979 World Globe Logo
TWO Amperex 7591A vacuum tubes. Tested on Amplitrex AT-1000 tube tester (fixed bias mode). Tubes test at 10010 and 10350 where 6630 micromhos is pass/fail grade. Gm matched to within 3.5% difference. No rattle / tight base / no loose parts.
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CMI Sylvania 7591 7591A NOS Excellent Testing Values Tightly Matched Pair
These tubes are carefully tested on my TV-7D/U at 60-64/36 min good (55-56=100%). They sound wonderful in my hifi system. Super rare and hard to find now. What you see is what you get.
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1 International 7591A Vacuum Tube – Vintage Beam Power Audio
The 7591A is a beam power pentode tube with octal basing. It was originally developed by Westinghouse and promoted for ultra-linear audio applications. Many audio manufacturers including Eico, Hammond, Heathkit, Hitachi, Fisher, Lowrey and Scott used the 7591A.
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Sylvania 7591 7591A NOS Excellent Testing Values Red Prints
You are bidding for 1 Sylvania 7591 7591A NOS Excellent Testing Values Red Prints. The tube was carefully tested on my TV-7D/U at 70/36 min good (55-56=100%). It sounds wonderful on my hifi system with other new tubes. Super rare and hard to find now. What you see is what you get. Please look at the photos carefully before bidding. I am willing to answer any question Return is accepted if you pay for the returning fees. Thanks P/S: The shipping fees in the listing is by regular mail (normally Vietnam post) taking from 12-25 days depending on buyers' local customs. To some regions, it can take even longer than that. Besides, Vietnam post is not always available to some countries in South America, Northern Europe or Africa. Please ask me before paying. If you want to use express shipping services like DHL, Fedex or UPS express taking 3-7 working days, you have to pay an extra of around $68.75. (For order over $1000, Express shipping service is a must. Please wait for the invoice to pay). Please let me know so that I can send you an invoice. If the item(s) purchased may not arrive or faulty, please don't hesitate to contact me before opening cases on ebay. I am willing to reach to a solution and make you completely satisfied. Thanks a million. Ok
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ONE NEW RCA 7591A Tubes / Amplitrex Tested STRONG 💪 +100% / Oct 1968
ONE RCA 7591A vacuum tube. Tested on Amplitrex AT-1000 tube tester (fixed bias mode). CE date code = October 1968. +100% plate current test results. Tube 1: 11520 micromhos @ 76.2mA plate current emissions.
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1 x National Electronics 7591A tube, Tested Excellent !
Ip # 36 on Maxi Matcher tube tester. ( Tube tester not included ).
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(4) Ultron 7868 Tube NIB USA Tip Top For Fisher 400 Or 500c 7591A With Converter
For type 7591A tubes with proper adapters. (4) 7868 tube Near MINT. Our TV7 does not have settings for 7868. We are able to use adapter and 7591 settings to test them. All Tested as 70 while minimum is 36.