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ksa1220

  1. tutor_turtle

    F-1159 driver board: KSA1220/KSC2690 vs KSA1381/KSC3503

    Hi all, I bought a pair of Ben's (peace, love and music) new blank F-1157 driver boards for my AU-999 project. It's all done except for TR811 and TR813. Ben suggests KSC3503 and KSA1381 respectively. I have a lot of KSC2690Y and KSA1220Y which I have used in the original F-1157 and seem to...
  2. J

    Marantz 2215B Power Supply Transistor Subs

    Hi all, I am currently restoring a Marantz 2215b as my first restoration. I am working on the power amp and I am having trouble sourcing a suitable replacement transistor for H709 and H710. The originals were 2SA684 which folks have said to substitute with KSA1220AY. However KSA1220AY is out of...
    • J85t
    • Thread
    • 2215b 2sa684 ksa1220 main amplifier marantz obsolete p700 restoration substitute transistor
    • Replies: 9
    • Forum: Marantz Audio
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