Oh interesting. The datasheet for the PCM5102A says it supports line-level output with a minimum load of 1kΩ [1]. I think most headphones typically have an impedance of less than 100Ω. I'd guess the excess current results in some distortion or low volumes? It works fine in practice though?
replyI only checked it with a mdr-zx770bn. And it was OK. But as I did check that with a breadboard, any noise could be attributed to bad connections/emi.
replyNow I'll check it when I work on this next time. Probably in the upcoming days. ( Still my current protoboard would be only a tad bit better )
I rechecked it. There is no noise or distortion. In fact volume levels are pretty good. I am using some digital volume control and can't go too high.
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