Unbelievable. I messaged Anson about this. His response in 30 mins was a firmware fixing the volume issue. I now run my IEM at vol 9-16, depending on track. on high gain though, the volume is significantly increased. My functions seems to be the same as 1.44. Seriously impressed with the customer service here. Sound wise, it's warm but well extended at the treble. It sounds impressively clean for the lack of a better descriptor. Warm and clean doesnt usually work together - but it does in this instance.