Ruby Tubes 12AX7AC5 HG Tube Overview
A Gak overview of the Ruby Tubes 12AX7AC5 HGThe Ruby Tubes 12AX7AC5 HG is a very consistently made , sweet sounding, and very warm tube. the HG or 'High grade' is a measuring system used by ruby tubes, which basically means the tube is better suited for amps that need more quiet tubes.
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