I replaced the stock Sylvania 12AX3 with RCA. The sound seems significantly more organic with less bite, yet not lacking in any detail. More midrange and upper bass warmth.
Sure. The sound with the stock tubes sounded a bit sterile and mechanical, with an emphasis in the treble (the bite). The sound with the RCA 12AX3 has less treble emphasis, and perhaps a bit of emphasis in the mids (more organic and less sterile).
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