Several DAP310 Cards Available

Over the years, I’ve managed to accumulate a few more cards than I need for repair inventory purposes. Specifically, I have several Equalizer cards for sale. They are fully restored, tested, and guaranteed. While I have some other cards as well (to be offered at a later date), they are not yet refurbished.

Trying to be fair, I’ve set a price of $30 each plus shipping, which is about what I charge to refurbish one. If you need one, please send me an email at admin at First come, first served.

WP Admin


  1. I am looking for a circuit with modifications to the equalizer card. I found one made by Dana Puopolo but the part numbers don’t match up and I haven’ had any luck finding him. His modification looks to be better for AM.

  2. You don’t think that the factory curves are not beyond AMs frequency response? What would you recommend?


    • No, I don’t. The filters are very broad. When I rebuild them, I return them to stock. Mike and Kay Dorrough got it right the first time.

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