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6cg7

  1. T

    Recommended tubes for my Luxman CL-40: 6BQ7A (RCA?) and 6CG7 (Raytheon?)

    I purchased a vintage Luxman CL-40 preamp and could use some advice from the tube gurus here. This preamp uses a unique topology with 6BK7B (or 6BQ7A) for the first stage and 6CG7 for the second stage Although the CL-40 sounds really good with 3D sou, it was serviced 20 years ago and I am...
    • taniani
    • Thread
    • 6bk7b 6cg7 luxman cl-40 tubes replacement
    • Replies: 2
    • Forum: Tube Audio
  2. tutor_turtle

    6SN7 (with adaptor) replacement for 6CG7?

    I have a pair of Luxman MB3045 monoblocks w/ KT-88 mod. I've been doing some tube rolling on the V3 / V4 locations (where the obsolete 6240 goes). I'm driving Klipsch Cornwal IV's. I've tried the 6GU7, it's a more forward presentation than the 6CG7/6FQ7 ( the tube recommended in the KT-88...
  3. P

    6CG7 instead of 12AU7 in MC240 - will I be taxing the transformer?

    I was advised that this mod was safe and have been using an adapter for it but the nagging feeling in me suspects that I will do eventual harm to my 240. I need some hard facts here if anybody has it as to why I should or shouldn't continue. Just playing it all safe!!! Thank you in advance.
  4. ritchie

    Italian Tubes

    Searching for a pair of 6CG7 and found these on ebay. They look great, especially the boxes. Do Italian tubes sound that much better than those made elsewhere? Are they really worth the asking price? Or are you just paying for the rarity and the packaging?
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