introducted back in 1958, westinghouse was one of the first to manufacture 7591, high quality and sourced by many oems!fisher scott sherwood pilot sansui kenwood pioneer eico harmon gibson and jukeboxes were just a few to incorporate 7591this audiophile crown jewel is soughy after, westinghouse 7591 w/ very nice silkscreen, made specially for eico brandwarm sound reproduction w/ grey plate internals, live-concert holographic imaging w/ vinyl style intimacylegendary heavy glass w/ thick hollow getter (like telefunken) made in 1964, includes plain or branded box full mutual gm conductance test, pristine 105 % gm (65 good) + important life test pass! (a key longetivity indicator)our special gm output test applies real world 225vdc voltages w/ filtered dc, plus an impeccable gas test + leak/short checkwe also pride ourselves on a proprietary complimentary value-added complete refurb screening deox processgive 100+ session hours w/ your specific amps voltage to fully settle in (break-in is important)ships well packed worldwide w/ free economy postage, 3 available authentic vintage hifidelity audiophile / preamp / mic tube curation by caliacoustics, see our website!new arrivals + limited special editions + rare true-nos sealed box + pinched waist + high-resolution headphones
Item Tag: United States
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Sylvania 7591 7591A Excellent Value NOS NIB
The tube was carefully tested on my TV-7D/U as shown in the photos with 36 min good (55-56=100%). It sounded wonderful on my hifi system with other 3 new tubes. Super rare and hard to find now.
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RCA 7868 7591A 7591 EL506 Black Plates Super Rare Tested NOS Matched Quad
These tube can be use to substitute 7591 with adapter sockets which bring you stunning sounding quality. That’s the fact. The price is not included sockets. They sound wonderful in my hifi system.
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NOS Zenith 7591A Preamp AudioTube ~ HolyGrail Vintage USA ~ WarmSolidDiscGetter
introduced in 1963, the legendary 7591a was an improved design w/ better screen dissipation and a low-loss basefisher scott sherwood pilot sansui kenwood pioneer eico harmon gibson and jukeboxes were just a few to incorporate 7591arevered by audiophiles, the copper neck solid-disc float getter zenith 7591a captures an incredible amount of low-register detailwarm sound reproduction w/ grey plate internals and black plate upper heat dissipator for live-concert holographic imagingthis collectible intimate vinyl style classic also features a pristine silkscreen and original box, plus twice tested for mutual gm full conductance test, pristine 110 % gm (65 good) and 10750 micromhos + useful life test pass! a key longetivity indicatorour special gm output test applies real world 225vdc voltages w/ filtered dc, plus an impeccable gas test + leak/short checkwe also pride ourselves on a proprietary complimentary value-added complete refurb screening deox processgive 100+ session hours w/ your specific amps voltage to fully settle in (break-in is important)ships well packed worldwide w/ free economy postage authentic vintage hifidelity audiophile / preamp / mic tube curation by caliacoustics, see our website!+ limited special editions + rare true-nos sealed box + pinched waist + high-resolution headphones
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NOS NIB 7591A SYLVANIA Grey Plate “O” Getter Made in USA Amplitrex Tested
NOS NIB 7591A SYLVANIA. Tested Advance Digital Tube Tester Amplitrex AT1000. Like Amplitrex AT1000 Advance Digital Tube Tester. “O” Getter. Grey Plate. Hickok 752a tube tester, AVO Type 160. We specialized in thoroughly tested and screened quality.
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Sylvania 7591 7591A Excellent Value NOS NIB
The tube was carefully tested on my TV-7D/U as shown in the photos with 36 min good (55-56=100%). It sounded wonderful on my hifi system with other 3 new tubes. Super rare and hard to find now.
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Sylvania 7591 7591A Used Good Testing Values Red Prints
The tube was carefully tested on my TV-7D/U at 52/36 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.
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Lowrey 7591 7591A Fat Base Copper Plates NOS Excellent Testing Values
You are bidding for 1 tube Lowrey 7591 fat base copper plates NOS Excellent Testing Values. The tube was carefully tested on my TV-7D/U at 68/36 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.
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RARE Westinghouse 6013 WL7611 Electronic Tube
This is a large for display only electronic tube. I’ve never seen anything like this. Comes with a cover. 14 inches long!