Like more salt in food is often interpreted to taste better so is more loudness in music.Did you set up the instruments to the same level on a ixer for testing?
@knurd75 I dont really want to rip up this thread once again.....
All I can say is that at the moment I am learning Pure Data. On Pure Data I can change the DAC to my liking, I can get the sounds al loud as I want
I hope you don't find my answer abrasive. The volume of your sound source denotes only one quality of a device: It's maximum volume. One can correct these differences there with a mixer. I look forward to make a few comparisons of my own. ATM I only have headphones to play around with the axoloti.