Hi, wow, very nice!
The HD Amp must have a killer power supply section.
I have the Tube DAC and just acquired a new MPS (with battery). I was going to get the Classic PSU (with supercaps) but since the P20 is feeding power, I didn’t think the noise reduction of the Classic would be noticeable, and it was about $10k more expensive.
I have a question about stacking the Nagra components. For the new HD line, they are meant to be stacked; but for the older HD or current Classic line, Nagra says not to stack the PSU (Classic or MPS), since it has a large transformer. Despite this, most photos show the components stacked.
In my case, I can only stack them. One reviewer complained of compressed dynamics and lack of inner detail when they were stacked; I can’t see how that could manifest itself? I would expect line noise when the volume is increased to high levels, if there was interference from the transformer. Anything else to check? I’m just concerned that I’m leaving some quality “on the table”, as it were!