low volume

I installed Volume on my raspberry 2. I connected a Meridian Explorer DAC via USB. I get sound through the Meridian but the volume is very low. How can I increase it? Is there a config file where I need to make a change?

Volumio uses Hardware Volume mapping, so probably this is the max volume allowed by your DAC. I would suggest to change the Mixer Control, and try to set the volume. Let me know