I can easily tell the difference using good headphones. You just need to know what to look for. Once you know, you can't help but notice. The difference is the

I can easily tell the difference using good headphones. You just need to know what to look for. Once you know, you can't help but notice. The difference is the transients, especially the cymbals and the snare. If it's muddy, you're listening to compressed audio.