Here at thetubestore.com we sell tubes from the original manufacturer whenever possible. Groove Tubes do have a few tubes unique to them only. However, in general we believe they are not a tube manufacturer. The bulk of their tubes are not unique which is why we don't carry their products. Neither, for that matter, do Fender, Ruby Tubes and a host of other companies manufacture tubes. All of these companies buy tubes from the same people we do: the companies who actually build tubes, such as Sovtek, Svetlana and JJ/Tesla and then they relabel / rebrand them with their logo. We believe in providing honest value for your money when purchasing tubes, and in letting you decide exactly which brand and type you would like to buy. This is the only way you can compare the different sounds of different tubes in your amp by knowing exactly what's in there. Our Perfect Pair power tubes are matched as closely as anyone in the tube industry, and have the most accurate, bias-free operation of any tube numbering system, including Groove Tubes. We hope you'll agree with us that it's better not to pay extra for "rebranded" tubes, and that it also makes more sense to know exactly what tube you're buying. If your amp currently has Groove Tubes in it and you have questions about replacing them, or about biasing your amp with non-Groove Tubes, ask us!
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