I recently got a pair of ATH-50s, and I've noticed that on certain songs I can hear faint hissing or crackling sound at certain times. I don't use a pre-amp/AMP/DAC/etc, just straight from the back of my PC. I am thinking about getting the FiiO E17 as I see a lot of good press for it and I've never used a Amp/DAC before, but that's not overly relevant to my current issue at hand.
Per some suggestions on Head-Fi I had seen, I did run the JLAB Burn-In tracks http://www.jlabaudio.com/burn.php for about 12 hours total so far and listened to music for a few hours as well. I had the PC set to 50% volume and 30% on the actual burn in noise generator on the site. I'm wondering if perhaps I damaged the headset by using the burn-in tracks?
I've been listening/streaming from Spotify Premium for all the tracks I've been listening to, so I wasn't sure if it could be the track quality as well.
Some examples of where I hear it:
Around 0:07s into Killin' It by Krewella on the Get Wet album
Around 0:17s and 00:31s in Strangers by Seven Lions.
Around 0:05s into Imperial Attack on the Star Wars Episode IV: A New Hope (Original Motion Picture Soundtrack). This whole track sounds like garbage really, but I wasn't sure if that was due to age/quality or what.
Other than this, they sound pretty amazing so far - just really hoping I didn't damage them! Please forgive me in advance for my noob-ness and if I've desecrated such an amazing pair of headphones...