Audeze MM-100 vs Sennheiser HD 490 PRO

The Audeze MM-100 and the Sennheiser HD 490 PRO are both open-back, over-headphones designed for studio use. They have some differences in design that might cause you to prefer one over the other. The Sennheiser have better bass extension and a less recessed treble range that's useful for identifying clicks and pops during audio editing tasks. The Audeze use planar magnetic drivers, and the Sennheiser use dynamic neodymium magnets and, as a result, the Audeze have a greater degree of pinna activation that can translate to a wider sound. They're also much heavier and less comfortable on the head. The Sennheiser come with two sets of pads, so you can swap them out to alter the sound profile slightly. However, the Audeze have a higher build quality that will translate to better durability in the studio.