Alternate AC power frequency.. Higher than 60Hz


Watching a Paul McGowan utube video about "What’s the best voltage and frequency’I see he would go up to 400Hz for AC voltage frequency.
I use an older PS Audio P600 with an optional board which lets me boost AC from 60Hz up to 120Hz.
I use it at 111Hz to power my digital gear.
So far, over seven years, a few items died, Particularly Sony changer. ALso a Behringer DEQ2496 sounded better on 60Hz.  But other changers and DACs thrive and sound better with the higher AC frequency.
No no other (A few PS Audio P300 P600 P1200 with the optional board can do it) regenerators ’do’ higher AC frequency. But someone wrote the new PS Audio P20 will also up the frequency if so set.
Now not one word of this on PS Audio P20 owner’s manual. nor anywhere online.
Maybe I have to CALL Paul?
SO.. Anyone else hear of the PS Audio P20 being able to up the Hz from 60?
And yes I will discuss the benefits of this. Up to a point. If you know nothing and want me to educate you totally. Ahhh no, that is not gonna happen.
If you want tp view the utube video: https://www.youtube.com/watch?v=Np--y3Kfy28
elizabeth
Sorry to see you go (again) @elizabeth 
I think despite our best efforts, something is often lost in the process of communicating by written messages. I don't think @gdnrbob meant to be nasty- but found your prerequisite for some knowledge off putting. Now you are going to make me research this (which is a good thing).
Stay happy and inquisitive--it's what we are here for, not just the toil and tumult.  
Elizabeth, you are always a pleasure and forward thought provoking questions. Thank you.

Of course, it may seem obvious, but AC synchronous motors, such as those used in many turntables lock to the mains frequency and will not spin at the correct speed if the line frequency is not at 60 cycles in the US and 50 cycles across the pond. 
Once again, Elizabeth offered some very good helpful information, which I haven't heard mentioned here before, and just topped it off with some of her, as always (constantly welcomed by me) dry humor.
Appreciate it and her.

I called PS Audio and asked about stuff.  Emailed Paul McGowan.The P20 does not do higher Hz. It is designed to be very efficient at 60HZ and can not be altered.So as far as I know, the only way to try a higher Hz AC power are old PS Audio units P-300 P-600 P-1200 that happened to have an alternate circuit board allowing Hz changed 60 up to 120.