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What can I improve/change in this pre amp schematic? (The tube used is a single 12AX7) : r/audiophile
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Given one 12AX7 how would you run it given the rest of the amp is SS? | Page 3 | diyAudio
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improvements on 12AX7 12AT7 EL34 schematic? | Page 11 | diyAudio
