proaudiotubes

  1. audiokid

    LA2A Tubes

    I have two band new UA LA-2A , bought two sets of GE LP 12AX7 pair + RCA 12BH7 , that were vintage new and matched and switched the stock LA-2A tubes out. Was there a difference? I used a Neumann M 149 into an SPL Premium mic pre (which conveniently has two outputs per channel, (a cool...
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