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• Post #2986403

  Holiday #diy #electronics audio project. This one is a 4-channel solid state relay for turn-on/off mute and shutdown (speaker protection) if DC is detected on any channel. While it would be smaller if implemented in a micro, it's all discrete circuitry in the hope that it is both reliable and repairable. Board from pcbway; it was loaded (and hotplate reflowed) yesterday but not tested yet. Full design will be published on my github if it passes testing.