@amirm, for my understanding, how far did you need to open the volume control to reach 2 V?
That was indicated on the graph:
I think the volume control goes to 99 or 100. I maxed it out initially and it produced 2.4 volts so I backed it down to get our nominal standard of 2 volts. So as is, I am not taking full advantage of the output level that the unit provides.
And say people would use the line output to drive a sub, is this volume control setting something people might use in practise when using a digital input or would this level drive the power output stage of the amp into clipping?
The own complained that he could not get enough volume to drive his sub.
That aside, I did not test it this way for the amplifier. For the amplifier, I set the volume to have the gain of 29 dB per every amplifier I test. I fed it analog input first for just 5 watts. And then switched digital and matched input digital level to get the same 5 watts with the same volume control. This necessitated backing the digital level way down:
As you see, the digital level input to the internal DAC is now set to -24 dBFS. So no way it should have clipped internally and it did not. Yet the digital input heavily degraded noise performance of the amplifier.
No way you want to implement an internal DAC which degrades the performance of an amplifier. Just about every DAC I test has ability to be completely transparent to the 81 dB SINAD of H95. The one in H95 is not capable of doing so in my measurements.
Bottom line, in testing the amplifier, no clipping occurred. If it had, you would have seen a lot more spikes in FFT.