Manufacturer: Heath by Mullard Great Britain. But this the way of the world now. We are always looking to buy more tubes. Large collections, small collections, it doesn't matter. Looking forward to hearing from you, Dan.
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This is one of kind tube to show your friends It’s factory mislabeled tube as 12AX7 but in fact it’s 12at7 Been confirmed via 3 users by now . New old stock I changed price due to item being one of kind item . Do not assume if you have any questions ask before you bid . Shipped with USPS First Class.
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B309 / ECC801S / 12AT7A. British Made CV455. I don’t know. Truth is, it doesn’t matter. We’re the real victims here. It’s been said that the Mullard sound can be most likened to a warm British jacket of the finest tweed.
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The tubes sound wonderful in my hifi system. What you see is what you get. Sold as is.
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Tested fine on valve tester.
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Tk3 B7C4 Code in the Glass. CV455 ECC81 12AT7 Valve Tube. Mullard, Made in Great Britain.
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A tube was considered acceptable/new/ passed standards if it tested between the specified minimum and maximum on a tube data sheet or the minimum value specified on the tester (tv7 is minimum is 65%).
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Liquid mid band, holographic sound reproduction, great bass, and refined polish highs, all contribute to their collectible lore.
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