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5814a

  1. meako

    Nobsound Tube Preamp

    I recently acquired this preamp from Nobsound/Douk Audio. It is based on the Marantz 7 line stage with the Shigeru Wada circuit mod. It had two 12ax7s and two 12au7s from PSVANE. Stock tubes sounded awful. It was very metallic and the bass was really weak. So, I ended up replacing the 12au7s...
    • meako
    • Thread
    • 12au7 12ax7 5814a douk nobsound shigeru wada srpp tube preamp
    • Replies: 34
    • Forum: Tube Audio
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