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

Showing 8 responses by elizabeth

Yeah, I love folks who snap back too. Off putting? Like you? I guess. Glad you (don't) like my style. Since you have no idea what I am asking or doing, now I do not have to bother about writing about it at all. Next time you don't know OR care about something?  just keep walking.
So long and thanks for all the fish.At the start of this year I came back to answer one question no one seemed to know. Having done that I made the mistake of hanging around. Now I realize that was an error. So I say goodby, I have nothing to gain hanging around this place, and nothing more to contribute.Goodby.
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.
THANKS rel, that is an interesting link!I wonder if there are any smaller 400Hz devices I could acquire from the aviation industry? I will keep that in mind.As for the fact turntables use 60Hz.. yes, that is an easy solve problem.I almost left for good. But reading the positive posts here made me stay.
I am fond of Geoff (in a kind if well yeah he is weird, but fun, way) . And any banter between us I hope is taken as lighthearted.
I agree with larryi about not taking chances with expensive gear. And why I am not plugging my new $7000 box into the PS Audio P-600 I use at 111Hz. I do have several other digital bits plugged into the higher AC Hz, but all of them are cheap or old and reliable, or used bought cheap.There are warnings about ’digital power supplies’ (Confusing since that is not a regular power supply for digital gear, but any ’digital’ power supply for any gear) not being happy on a higher input AC.I found a Behringer DEQ2496 really sounded worse in 111Hz than on 60. And that my Sony 555ES changer quit working, Mainly due to overheating, so as soon as it was back on 60Hz, it was just fine.. So yeah there can be problems. And my guess is, the problems for a manufacturer to build and market a regenerator capable of outputting higher AC Hz far outweighed the pluses. As far As I can tell Paul McGowan likes 400Hz, but will not make one for commercial sale. And most likely due to endless questions, complaints and more questions. Then the liability issues.. I Googled 400Hz and airplane and found a bunch of info and products including ones to use on the ground with aircraft that use 120V AC to make a variety if AC voltages at 400Hz (including 120V) So if I or anyone else was interested. I think that would be the way to go.
Hard to say why companies do not want folks experimenting? My guess is they made it and know it does just fine as is, So why fool around, And then folks blame the company when fooling around screws it up! Same for all tweaks. The main place I use the higher frequency had been my old bought $250 used DA, and the $40 bought used five disc CD changers. Not much money on the table.     
On my own Bryston BP-26 I have not tried the higher Hz AC. but I have tried both 'Technical power'/ balanced power 60V/60V and normal 120V/0V from my Furman conditioner. The balanced power does also make the Bryston a little warmer. and the sound has greater clarity but slightly leaner. vs normal AC.  
                                                            
I have my Marantz Sa-10 connected to the AC via the 'Technical power' 60V/60V from my Furman REF 20i ... this means the HOT line is only 60V but the 'Neutral' line is also 60V (in the same way in US homes 240 is split and is 120V hot and 120V neutral to produce a total of 240V) Some devices have trouble with balanced power. Particularly tube with direct heater (so I have read.. I have no experience, but have run my own tube preamps with balanced power, no problems, just the same slightly leaner cleaner sound with 60V/60V.)
The higher rail voltages with higher AC frequency erik_s mentions is a theory. One that would need to be tested to see if it is true. But in my opinion, the theory is faulty.                         
There is a difference (and i know you know too) between voltage and amperage. Beefier power supplies offer more amperage at the exact same voltage. Lots of upgraded power supplies are offered for electronics, without endless 'overload' dying of equipment (if it did die, the result would be hotly discussed here) So I have to say your theory, theoretically in my thinking about it, is wrong. 
I would agree there might be higher rail amperage.(Depending on the design of the power supply). But as I wrote, that is something plenty of folks do to tweak the equipment to sound better all the time.The voltage is not going to change.
eric, the link was a good read. Mainly discussing using a transformer under two problematic conditions. Transformer made for 60Hz used at 50Hz, and one made for use at 400Hz (airplane Hz) used at 60/50. or reversed, using a made for 50/60Hz at 400Hz.(which are the only ’standard’ Hz usages at this time)There are problems with using a 60Hz designed transformer at 400Hz The wire used on each type is different, and the thinner wire in the 60Hz design is not suitable in 400Hz operation.(from a manufacturers standpoint) I do not know if 110 Hz is too much. (400Hz is 6.666 times the 60Hz operation, where 110 is less than 2 times. So that is a difference the article does not address) Clearly from my own use it may, or may not be a problem. (I used it mainly with digital gear, a DAC, no problem, One brand changer, no problem. But the Sony 555ES changer did overheat enough to shut down, where the Sony SCD9ES also no problem.) The 555 is a multichannel and the chassis is STUFFED full, no open space at all in there.
So thanks for the link.
ADDED and knowing the Marantz SA-10 transformer is sealed in a canister, I would think it a bad idea to run the Marantz at a higher Hz, Just sayin'.Plus I just turned down the Hz to 90Hz. that is only half again the rated Hz for the US based transformer.