I am using my Moreplay amp to add "tube sound" to my system, not to control volume. I ultimately control the volume on my amp and I am trying to decide how far to turn the volume/gain dial on my Moreplay. I have my DAC hooked up RCA to the Moreplay and XLR straight to my amp. I can add the Moreplay into the chain by switching to RCA input on my amp vs XLR. My two initial trains of thought are that I can volume match both chains or I can maximize the Moreplay's volume to get maximize my input signal.
Is there any harm to maximizing the volume/gain dial on the preamp? Does this add more distortion or strain the components more than setting the volume knob lower? Does the Moreplay have a sweet spot where it performs most optimally? Also, what is the maximum voltage output, assuming a 2V RCA input? I know that my headphone amp can handle a fairly hot input, but that would be good to know.