tube roll

  1. Lockheed Mar

    Monoblock MC275 50th Anniversary tube rolling help (12AX7 on V3, V5 position)

    Hi everybody I have a question about tube replacement for my MC275 (50th Anniversary version). My MC275 is running in monoblocks, so do I need to replace two 12AX7 on V3 and V5 position or just one of them? Which tubes (NOS) I should buy? I have Mullard CV4004 on C2300, Shuguang KT-88Z on...
  2. fishookred

    Tube Suggestions For Schiit Valhalla II

    So I am looking to roll the stock tubes in my amp and was wondering what the best sounding option would be at a good price point? the amp was $350 so I'm not looking for anything crazy. it uses 6922/6dj8 and equivalent.
  3. avanti1960

    Integrated Tube Amp- Tube Types and Positions vs. Impact on Sound

    Hi, I just got a new tube integrated amplifier and have some questions about the types of tubes in the various positions on the amplifier- 2X 12AT7 (phase inverter) 2X 12AT7 (preamp stage) 2X 12AU7 (first stage power amp) 4X 6L6GC (power tubes) If I wanted to tube roll, which positions would...
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