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sm4646

  1. Ed Dumas

    Optonica SM4646 Rebuild

    I just discovered that an amp I gave to my daughter a few years back is actually quite a gem. It is an Optonica SM4646. Optonica was high end to Sharp like Technics was high end to Panasonic. The SM4646, it turns out, was Optonica's top of the line amp for about 1976/77. Optonica brand did not...
    • Ed Dumas
    • Thread
    • amp rebuild integrated amp optonica sm4646
    • Replies: 16
    • Forum: Solid State
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