Not many people are going to like the Pro 900. It has an very metallic, artificial tone, and aggressive as all hell, piercing highs. The bass is all mid bass, with a notable sub bass roll off off, and mids are *quite* recessed. It's a polarizing headphone, for sure. I hate S-Logic as well. I like iot for certain things, but it's not a headphone easy to recommend. Ear fatigue is an absolute problem.
4/24/15 at 4:26pm