EL34BSTR RUBY MATCHED QUAD High-gain EL34 with dynamic tone. Extra-strong bottle. Loud and clear. Often reviewed as well-balanced. All RUBY Tube power tubes come already matched. There is no extra charge for this service. Our Magic Parts matching process is very exact and our tubes are matched within +/- 1 mA (mille amp) of each other.
D**.
ruby tubes EL34SBTR
These tubes ( china) came stock in my Marshall DSL40c. they have a great low end . Tried others but these sound best in this amp to me.Make sure to set bias after installing or do what i did and buy 4. Bias one set and the other matched set will be good to go when needed.
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1 month ago
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