I 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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