No, I don't use a streamer, just a computer. My ear is sensitive to all kinds of digital wrongs so I would've heard it. I don't quite remember about breaking it in, it was alright from the beginning and I bought it new.
In my case, signal goes from computer to a not too bad Burson Dac via Wywires Silver USB cable. Wywires Silver power cord on the Dac. Grado RS1 headphones.