Thank you for the comparison of Sony Studio monitor headphones. I have the MDR-7506, and without using the EQ the highs are piercing as hell that it is so fatiguing I have to take it out of my ears after every hour of use, and switch to my another studio monitor headphone (ATH-M40x). But despite of that, the 7506 is so helpful to hunt down the annoyances of my audio source like compression artifacts, sibilance, etc. P.S. Does the JVC HA-MX10-B no longer in production?