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6bk7b

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    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
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