Did the THX00 after I figured out how to make the X3ii work as a USB Dac. Running Fidelify player for Spotify with Wasapi control and line out to C5 Amp (with bass boost on top of EQ) > Stock THX00. The pads made it odd on positioning the paper.. maybe it's not sitting proper and not getting maximum flutter via drivers?
Pictured below is the EQ settings I used. I tried the headphone on for a brief second and found the non-distortion line and was just a hair under (in terms of volume).
I would never listen at that level, even that brief moment gave me a headache. After making the video I put it back down to sane levels (around 80-85db) and found A LOT of bass, so I can only imagine what that SZ sounds like with all that bottom end
Warning: NSFW (lyrics)