Can’t wait to try with my devices! However, using chrome on Android, the sliders knobs don’t track finger motion. (Many sites have similar issues.) They will move a little, then stop. Touching in the slider bar instantly moves the knob to the touched position. The audio comes through just fine, so it is still usable, just a little difficult. Maybe an alternative UI for mobile that adds fine adjustment up/down buttons? Or even eliminate the knob completely (because you can’t touch the portion of the bar underneath it) and replace with a narrow vertical bar to indicate position. Then users can just touch anywhere on the bar to position the level.