Paul Hynes PR3, Qualiaphysic 712SV, Uptone JS-2. What should i choose?

Discussion in 'General Audio Discussion' started by NAIDIVER, Jun 3, 2016.

  1. NAIDIVER

    NAIDIVER New

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    I'm looking for a LPSU for Mytek Brooklyn.
    Now t tend to like Paul Hynes PR3. PR3 spec is interesting. (But i never really heard of it)
    Now i'm still hesitated because i can't make a final decision to choose one among Paul PR3, Qualiaphysic 712SV, JS-2.
    Could you guy help me out?
     
  2. purr1n

    purr1n Desire for betterer is endless.

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  3. NAIDIVER

    NAIDIVER New

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    This is what Paul sent to me. What do you think? Please comment like a PRO. Thanks.

    The PR3 regulator module in the FC5 case uses the same component quality as the SR3 but with higher power IXYS Schottky Barrier rectification (Schotkies have no reverse recovery interference spikes) and higher power output stage using top quality IXYS power devices. The energy storage capacitance is increased by 4 times and the mains transformer is 130VA custom built to my specifications to avoid core saturation during operation. This mains transformer is very quiet both mechanically and electrically. The SR3 uses an off the shelf mains transformer but this is not as good as my custom designed mains transformers.

    The PR3 regulator topology used in the SR5 and SR7 power supplies is my proprietary discrete component design optimised for high quality audio use. All the audio related performance parameters of the PR3 topology are considerably better than the LT1083 specifications.

    The PR3 series voltage regulator noise measurements using an HP3561a spectrum analyser specialized for low frequency measurement down to the sub 1Hz region

    The noise floor of 3561A is typically 15nV/sqrt Hz and the PR3 series regulator was around 44nV/sqrt. When the 3561A noise floor is factored into the measurement the PR3 series regulator would display lower noise than 44nV/sqrt.

    The ALW version of the Walt Jung ultra low noise regulator, which is the lowest noise of the generally available DIY regulator circuits, was also tested.

    Here are the NF at 10Hz to 100 KHz:
    PR3 series reg – 44nV/sqrt. Hz
    ALW series reg – 70nV/sqrt. Hz
    40 nV/rtHz = 5 uVrms.
    Measured from DC to 100 KHz the output impedance remains below 3 milliohms and the supply line rejection exceeds 80 dB. Regulation operating bandwidth is from DC to approx 300 MHz allowing excellent wide bandwidth regulation particularly important for powering digital equipment clocking at high frequencies. Transient response for a 5A load current change is typically <100nanoseconds and the settling time is also <100nanoseconds. Transient current delivery for PR3HD modules >30A.
    I use Panasonic FC, FM and FR low ESR high ripple current, high temperature energy storage capacitors for excellent transient current delivery and long working life. Alternatives can be fitted but it is very important to ensure adequate power rating of power supply capacitors in high current linear power supplies like the SR5 and SR7. The Panasonic capacitors are very well built and give consistently high sound quality in capacitor tests on various audio forums.
    The specs for the regulator are :-

    Line regulation < +/- 0.01%
    Load regulation < 0.1% from 0 – 5A
    Regulator output noise and ripple typically 5 microvolts
    Ripple rejection >80 db from DC to 100 KHz
    IEC inlet silver plated pins
    XLR silver plated pins
     
  4. purr1n

    purr1n Desire for betterer is endless.

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    Look you boob, I am commenting like a "PRO". You've posted this question on other forums. I gave the non BS answer you will typically get here.

    The Hynes stuff is overpriced. It costs that much because this dude called Hynes has obtained Yoda like status in certain shamanistic audiophile circles.

    I've given you two options on power supplies which I've found to be fantastic among many that I have tested for various general audio applications.

    I'm not going to to talk about slew rates, transvestite responses, nippled currents, INXS Starsky and Hutch diodes, or GLAD Tranny capacitors other than if you go with the LITE Chinese shunt boards, change out the caps for better stuff. You can go with the good Nichicons or Pannys.

    Keep in mind that your Mytek will have additonal onboard local regulation near the crucial circuits anyway. Also, power supplies do have a sound that carries forth from gear to gear. What I like or other people like may not be what you like. This is why I recommended cheap, but good. Used power supplies are worth about the same as a used condom.
     
    Last edited: Jun 4, 2016
  5. NAIDIVER

    NAIDIVER New

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    There is useless here. Nothing creative, nothing educated, just someone go around and scold to other people like a drunky mad dog.

    You did not answer me anything what i want to. I'm not a tech guy or IT guy so teach me, educate me what is those parameter trying to tell. Compare to the others. That is comment like a PRO.

    If you can't explain me, you are nothing. Go eat sh.. and sleep.

    I'm so disappointed here. I'm out.
    SH
     
  6. JoshMorr

    JoshMorr Friend

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    This is one of my favorite types if audio board internet commenters. Ask advice, don't get the answer you are looking for, stomp around like a child and say that you're out. Poor English, audiophile bs on luxurious power supplies, and the "PRO" bro just adds to the fun.
     
  7. OJneg

    OJneg The Most Insufferable

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    @NAIDIVER

    I'm going to give you the benefit of the doubt and assume that you're not looking to reaffirm your beliefs/purchases and are actually inquisitive about power supply options.

    In short, I don't believe anyone on this forum is familiar with the 3 power supply options that you posted and couldn't really offer an extensive shootout comparison to satisfy your needs. However, Marv and others do speak from concrete experience when they recommend the aforementioned options. You should take his recommendation FWIW, knowing that he has not tried every option on the market. Perhaps other folks who have experience with the products you listed will come along and attest to their performance.

    If you would like to start a discussion about power supply specs and performance and how it may or may not correlate to perceived audio performance, then I believe this will be a much different thread than how you introduced it.

    Please don't take Marv's terseness too personally. Sometimes the staff here trades off roles, with certain of us being more aggressive Klingons while others play the more diplomatic Vulcan roll.

    Live long and prosper, and remember, it's just audio. :)
     

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