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  1. Harmony H303A voltages/quiet amp

    Started by Ampere, 04-12-2019 03:35 PM
    • Replies: 8
    • Views: 350
    Last Post: 06-19-2019 01:45 AM
    by g1  Go to last post
  2. Harmony H 303 A build from scratch

    Started by Rob55, 01-02-2012 02:59 AM
    12au6, 35w4, 50c5, frankenamp, harmony, homade guitar amp
    • Replies: 5
    • Views: 3,157
    Last Post: 01-04-2012 01:39 AM
    by JHow  Go to last post
  3. Help with Harmony 303a

    Started by max, 03-08-2009 11:50 PM
    12au6, 303a, 50c5, harmony
    • Replies: 0
    • Views: 2,057
    Last Post: 03-08-2009 11:50 PM
    by max  Go to last post
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