What I'm curious to know is if the noise is entering the audio chain AFTER the opamp and before the analog output which I'm suspecting is happening on the ASRock board, will the noise be further amplified by the opamp then too and it would give me less issues if there wasn't an opamp in there in that case? connecting my external headphone amp to the onboard it's got way more audible EMI noise at equal output volume (higher amp vol setting) and lower onboard audio volume compared to no amp with higher onboard volume for similar percieved levels. I'm obviously interested if the opamp will do the same in that case, then I might be better off without opamp.
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