No one is replying in the ESP-950 thread and they're different headphones so I thought I'd create a thread. I suspect none of you have these, but I'm hoping you might be able to guide me with general modding experience... The A250 is the dynamic little sister to the ESP-950. They have the same shell. I'm looking to tame the treble and boost/improve the bass. Below is the back of the driver. That's 10mm thick foam filling the housing. I was thinking maybe a dynamat circle on the back of the magnet and maybe a drawer liner donut over the plastic ring around the magnet. How does that sound?