Hello. I didn't like the 1990 MK2. They have a low amount of low frequencies, similar to the dt 880, or even less, and they are bright on all tracks, not sharp but very bright, lacking volume, coherence, and density. I thought they would be similar to the dt900 pro X, but they fall short in every aspect. Except for the width of the stage. It felt like I was sitting in a large concert hall in the fifth row, far away from the vocalist and musicians, and I like it when the sound is close to the musicians, warmer. It's similar to the dt900pro x. Additionally, if the volume is higher than average, the speakers start to choke, fart, and clap due to the low impedance, which was not the case with the 250 ohms and 48 ohms. What do you think of these two options for writing arrangements, beats, and production - the dt1770mk2 or the HD490 Pro? The main thing is that the sound should be cohesive, full, warm, and weighty with natural low frequencies, as the author originally intended. The Dt900 pro x is close to this, but it lacks precise bass (low frequencies) and has a narrow stage.