Okay, so this SINAD in headphone out is for full scale "4.something" volts. But how about lower output? I will not be using max output for my Audeze LCD-X, nor Audix A150, that's for sure. What will the SINAD be then? Does the DX7 Pro+ automatically lower analog amplification and raise the digital DAC output level for best possible SINAD in every possible situation? This kind of keeps me from buying it. Please help me decide, thanks.