Ruby Tubes EL34BSTR (Quartet) Tube Standard
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The Ruby EL34BSTR's are a new high gain tube developed by Ruby and manufactured by Shuguang. They have a gold plated grid and extra thick glass. Perfect for modern gain, these have unique a wall of sound break up, very articulate. Ruby Tubes are matched both by plate current and transconductance and come with a 6 month warranty.
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- Very articulate, thick sustain.
- This Ruby tube is a Sino, Chinese, Shuguang equivalent.
- Comes in a Quartet