PSU measurements are not very useful as it depends upon the DAC and amp as to how sensitive they are; remember the PSU is part of a system. Remember also that with TT2 the PSU is not the brick that we supply but the system inside TT2 - notably the large inductor, super caps and RF filters and subsequent regulators. The inductor/super caps ensure that only DC current (no AC or signal related components is drawn from the PSU brick at all). The PSU structure is extraordinary complex and has a profound effect on performance - but all of this is inside TT2, not the PSU brick.
Good morning Mr. Rob.
I understand what you are telling me. Ask me two questions:
a. As long as everything is done in the dac, could you even use a packet power supply, much like the ones we use to charge our cell phones, tablets, or other cheap devices? I understand this when you tell me that the external power supply is not important, but all the processing that takes place inside the dac. It's like that?
b. Also - I don't know that - it be beneficial for the DAC to connect it to a UPS that has pure sine wave output?
Sorry but you are wrong. What about the cabling to the wall? The cabling to local transformer? The sub station? The power source? What about the tens to hundreds of switchers in your house? The thousands in your street? The many millions in your locality?
.. that's a very good question!
Listen to Mr. Rob what I think: clearly we can't interfere with the electricity distribution system. This is certain. But that doesn't mean there aren't things we can do to dramatically improve the power of the audio / video system in general. Indicatively, I mention to you:
a. separate power line from the electrical panel of the house with a very good quality copper conductor, and with the appropriate awg using one of the 3 phases, in order to avoid any noise from other electrical appliances (refrigerator, washing machine, and many others that use fans).
b. measurement of the ohmic resistance of the ground of the house, so that if it is high, the interventions are made so that it descends, if possible, under 1 ohm.
c. use of suitable high quality cables (pure copper composition, correct awg, perfectly properly finished and absolutely quality plugs, very good quality power strip for their connection). In my opinion, these are basic things that every music lover should do to improve their music reproduction system.
Mr. Rob did it, and let me say that they helped a lot in his overall performance. I hope I was able to describe exactly what I mean. If not here's to answer your questions.
P.S .: I'm very happy Mr. Rob that we're having this discussion, it helps me a lot! I hope all the members who read the posts ..