I have 4 available, they are matched so if you need 2 or 4 I strongly advise buying them as a group. The Brimar CV493 6X4 CV4005 NOS NIB is a vintage rectifier tube with black plates, produced in the United Kingdom. This model has the brand Brimar, and is known as Cv493/6×4/cv4005/EZ90. This product would be a valuable addition to any collection of vintage audio and video equipment, offering a unique and authentic piece of electronics history.
Item Tag: Does not applied
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Brimar 12AU7 CV4003 CV491 ECC82 Long Black Plate NOS D Getter Matched Pair
They are tested NOS, balanced tightly matched on my TV-7/U and sound wonderful on my hifi system. These tubes can be used in plcae of 12AU7 or 6072 which upgrades your system to the next level. They are deadly quiet with very harmonic sounding 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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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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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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Mixed Brands Sylvania Hammond 7591 7591A Excellent Values One Tube Price
The tube was carefully tested on my TV-7D/U as shown in the photos with 36 min good (55-56=100%). They all sound wonderful on my hifi system. Super rare and hard to find now.
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Sylvania 7591 7591A Excellent Testing Values Matched Quad
The tube was carefully tested on my TV-7D/U at 68-70-70-72/36 min good (55-56=100%). They all sound wonderful on my hifi system. Super rare and hard to find now.
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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.