Review on Beyerdynamic DT 990 PRO Open Studio Headphones - High-Quality Sound for Professionals by Bao Ha ᠌

When I bought it, I was afraid that an amplifier would be needed. It turned out that 250 ohms is not so much in my case. I use M-Audio Profire 610. The volume knob is usually turned down by a little more than half (so the power of the built-in amplifier of this sound card is more than enough). Further, about their sound: the headphones are bright, but not excessive - you can listen to almost any genre in them, since the bass is also in abundance. But not everything sounds good on them (due to high highs) - overcompressed material sounds terrible (and this misfortune today affects almost everything that is at least somewhat suitable for radio broadcast, or those genres where they don’t really care about sound quality (experimental electronics)). I'm thinking of getting myself another set of headphones: more neutral ones, like the Sennheiser HD 650 (they don't compete with this beyerdynamic, because they sound different!), since you won't be able to listen to everything in these.