Hello I wish to ask have some issue my HiliDAC Beam 2s have some noise and stop work after get volume 50% on my iPhone are maybe is firmware

All this cables i use and same get noise and cannot powered the Beyerdinamic DT 990 Pro 250ohm only dont have issue when use with Audioquest dragonfly 1.5

i currious are is Firmware I Update last firmware and same to my friend phone we test and in high volume just so big noise and stop work on android

with my Sony MDR-1AM2 no problems work flawlessly and no issue because is 4.4 mm balanced Pentagon cable

can U help me fix this because so wish be used the Beyerdinamic to open him potential