I’m new to the audiophile world. I just purchased a pair of Beyerdynamic DT 1990 Pros yesterday. They sound great, but I was expecting more after reading reviews. I have no experience when it comes to picking up audio cues and analyzing music. Would a dac/amp make a noticeable difference in sound quality to an untrained ear? Right now I have them connected to a TC-Helicon Goxlr. Is the built in amp strong enough to efficiently power them? Or, would a real amp be a significant upgrade/worthwhile?
I just use a FiiO KA3 dongle amp because it feels better to use the balanced port on my headphones, but the even the 660S2 will sound fine out of almost any headphone jack.