Hi , I have a pair of DT990s 250ohm which are a few years old and are used for guitar practice only, I haven't really used the headphones that much but last night started hearing a buzzing out of the right channel when playing more than 1 string at a time.
The chain is Mac Mini and Kemper feed into a 2nd Gen Scarlett 2i4. I listen out of the headphone out on the interface and can blend backing tracks and the Kemper with no latency. Never had any problems with volume and the quality sounds similar between the Scarlet and the Kemper Headphone outs.
I've probably been listening a little louder than I should but it is easy to damage headphone drivers when you're just practicing guitar playing through a cranked Marshall profile?
I took the headphone apart last night to view the membrane and there were no visible hairs or debris on the membrane. Reconnected it all back up and the problem still exists. Swapped difference headphones and the problem is only with the DT990.
Thinking about switching brand and picking up a pair of Sennheiser HD 600's next, just wanted to check if other people people have has similar issues with the Senn / Beyer headphones ?