Any feedback on how these compare to Sony's 1000XM3 in terms of max volume?
just did a 2 minutes face to face between the Fiio and the Sony. Both wired to my BTR5 in USB DAC mode. The Sony clearly delivers better when ANC is on compared to when it’s wired and switched off. I kept the Fiio switched off as it sounds the best in that mode. In this comparison the Sony is about 10% louder. The Fiio is more enjoyable for me being clearly more spacious and airy. My only issue is the performance with ANC on. Big problem for me with the Fiio. still need to test in BT mode.