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  1. J

    WOPL PL14-20 Rev E and PL 400 Series II

    I have a question and maybe someone might be able to provide some insight. I purchased and built 2 PL14-20 Rev E kits a couple years ago. I finally have had time since retiring to work on my Phase Linears. I am currently working on my 400 Series II which I replaced bad outputs and emitter...
  2. J

    Phase Linear Dual 500 / White Oak Audio PL14 Control Board

    I am new to this forum, please be patient with me. I am sure many have asked this before, but is there a way to upgrade a Phase Linear Dual 500 (D-500, but mine is a "Dual 500) using a White Oak Audio PL14 control board? I Have built 2 so far, one for a 700 Series II that I have and one for a...
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