Oh, is that why my cheaper dac/amps will play the songs without cutting out but this amp won't? Because the pro gear is trying to protect itself, but the cheap stuff would eat the DC and harm itself?
How do I avoid tracks with DC in the future?
Thanks for your help!
DC is the 0Hz.
It's not about cheap or expensive,is more about choices and how one implements the filter ,some are way too sensitive.
In most of the songs you will maybe see some content at 0Hz but it's low on level,usually under -65db and it's mostly the combination of DC and level that may trigger a sensitive filter.
I would prefer a well made filter or even one not so good than none.
DC can cause mayhem down the chain.
BUT,DC is not only about songs,a broken DAC for example can output DC which eventually or suddenly can cause problems.
The sensible thing to do is get a DMM (even a cheap one) put it in the DC scale and test the outputs of the devices,that's what I do out of the box,without even plugging them for the first time.
Why?
Because DC will be amplified down the road and can damage speakers,headphones,etc.