Making a USB DAC and Headphone Amp

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Making Myself a USB DAC + Headphone Amp

I need a DAC for my AKG K702. However, the more I looked at commercially available a.k.a. “audiophile” products, the more snake oil I smell. So even before I ordered my CEntrance DACPort Slim, I was already looking into how I can reinventing the wheel

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I use OSHPark for prototyping PCBs. I decided to use their 4-layer FR-408 stackup simply for an un-broken ground layer. Turns out that the analog signals can easily fit on the top layer, so I allocated the power layer to the negative rail, and the bottom layer to positive rails.

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The DAC + Filter module works! It produces reasonably clean line-level audio signal as expected.

 

Making a USB DAC and Headphone Amp

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