It would likely be quite easy if you could compare them back to back, as in swapping from one to the other and playing a controlled source with a hi-fidelity amp and good headphones. The analog side of digital-analog conversion is an art unto itself and I've found a lot of variance between DACs, even though I'm neither a sound engineer nor an audiophile. If you are just playing a 64k AAC file on your EarPods, probably not.