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Ruby Tubes offers premium replacement tubes for most musical instrument amplification. What do you get when you buy a Ruby branded tube? The highest testing standards in the industry and a 6 month warranty. Ruby Tubes are the choice of many music professionals for this very reason. You say you can buy the same tubes cheaper that aren't Ruby branded? Ask about the warranty and the testing......That's right, Ruby Tubes 6 month tube warranty is simply the best tube warranty in the business hands down and their tube testing is second to none in the business! All tubes do not rate alike!
Tonetronix has been a Ruby Tubes dealer for over 15+ years with great success in the use of their products in our own in house service department. When purchasing tubes, Ruby is one of the best!