Hey and welcome! My first pair was the m40x too... Decent but I'm after something more comfortable. What's your planned setup with the k612, especially amp? K612 looks like a good budget option compared to K702 at the moment.

Hi everyone! I'm fairly new to high-end audio, but I've been doing a bit of reading (a lot on this forum, too) and I have my sights set on the AKG K702 as my first audiophile-grade headphone, being open and fairly neutral. Aside from that, I play piano and do piano covers + amateur recordings...