Ruby EL34BSTR/BW

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The Ruby EL34BSTR's/EL34BW 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, the se 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. For use in applications where the plate voltage is less than 450 vdc. For higher voltages, use the Ruby EL34BHT's. Show more