I just tried setting the line output of our DAC at .2V, .6V, 2V, and 6V setting the output of the Pre volume each time to 75db with a test tone. Then I played the same music track a few times with each setting. I really didn’t hear a difference.
Perhaps with different gear this makes a difference, but it doesn’t here.
I don’t know what point Paul was trying to make. He’s in a shop with a ton of gear, it would have been more helpful if he simply setup a test like I did and explain what he was hearing with each iteration. I think that was one of his least informative videos.
What does the ML player output? I have a Chord TT2 who’s 5V output on XLR seems like it’s just too much for my Pass Labs integrated, but runs my M700s brilliantly. When using the Pass Labs i run the TT2 in AMP mode and turn the volume to around -10dB. Instead of pop music being payed around 25-30 on the Pass Labs volume dial it’s now around 40 (max is 63). The bass quality and quantity is much higher and so is the imaging. Dynamics are also delivered better.
Does your Levinson player have an adjustable output?