Something New Has Arrived :~)

[Michael Ritter]

In my experience, the >90dB of noise rejection to beyond 1GHz and low impedance system ground provided by the 512 Engineering Symmetrical Power Source input transformer are essential for the highest possible audio quality.

We used a similar system (which the 512 Engineering Symmetrical Power Source surpasses) at Pacific Microsonics during development of the HDCD process and the Pacific Microsonics Model One and Model Two studio A/D&D/A converters.

Power line noise diminishes the audibility of quality differences between components, especially digital components, which is why we went to great lengths to have the cleanest possible power and grounding. It’s difficult to optimize circuits or algorithms when you can’t hear the result!  

[Michael Ritter]

3 hours ago, mansr said:

Isn't HDCD an entirely digital process?

Yes, but its only reason to exist is to improve audio quality and the way to determine if audio quality has been improved is by listening.

[Michael Ritter]

4 hours ago, jabbr said:

One of the most important purposes of an isolation transformer (balanced or not) is to break loops with outside equipment which are formed through the power and ground — so called leakage currents. Having a low interwinding capacitance is key. Not knowing the details of this product, undoubtedly they have considered this.

 

The value of of balanced power is improved CMNR.

 

Intetesting that we are looking out to 1Ghz! Is there some actual evidence that 1Ghz leakage currents (or common mode noise) have an audible effect? I’m looking for available measurements not theory.

>90dB of noise rejection to beyond 1GHz is indicative of superb broadband common mode rejection in the kHz and MHz regions where the majority of noise products occur.