27 / 41 / 56 / 71 / 76

These valves like 27 , 41 , 56 , 71 , 76 and others... from the early '40s, of typically American design, are high quality Triodes and Pentodes, very linear and therefore suitable for use as "Drivers" (but also Signal Input Amplifiers) in Preamplifier or Low Frequency AUDIO Amplifiers. Among the most famous Final Amplifier tubes driven by these tubes is the 2A3.

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