[Review] PS Audio GCPH Phono Amp

Discussion in 'Hi-Fi and General Audio' started by Shuggie, Nov 1, 2007.

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  1. Shuggie

    sq225917 Exposer of Foo

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    goodhifi, could there have been something else awry, i've had the gcph in my house and its much quieter than my little CA 640p and that is in the mid 80db snr.
     
    sq225917, Jan 30, 2008
    #21
  2. Shuggie

    goodhifi

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    Gcph

    I've plugged the GCPH straight in to an Accuphase P-5000 power amplifier; same problem.
     
    goodhifi, Jan 30, 2008
    #22
  3. Shuggie

    anon_bb Honey Badger

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    Some sort of interference pickup?
     
    anon_bb, Jan 30, 2008
    #23
  4. Shuggie

    SCIDB Moderator

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    Hi,

    I too heard at the Manchester show in that system. It does sound good. One to look at for sure.

    SCIDB
     
    SCIDB, Jan 30, 2008
    #24
  5. Shuggie

    goodhifi

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    GCPH Noise

    We measured with a DVM the balanced output of the GCPH at 100 ohm load and maximum gain on the front and back gain controls and found 2,2 mV AC instead of just a fraction of one millivolt.
    Measurement done on the test bench; not coupled to anything else. Oscilloscope shows 100 Hz spiky hum plus hiss.
    If the transformer isn't orientated optimally, the figure is even higher.
     
    goodhifi, Jan 31, 2008
    #25
  6. Shuggie

    JCL

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    Umm interesting.

    I just bought GCPH. Haven't plugged it in yet as no amp at the moment but I'll be surprised if it has any noise as that's (low noise) what people are saying is one of it's strong points.
     
    JCL, Jan 31, 2008
    #26
  7. Shuggie

    sq225917 Exposer of Foo

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    case earthed?
     
    sq225917, Jan 31, 2008
    #27
  8. Shuggie

    goodhifi

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    Yes; through the mains connection earth.
     
    goodhifi, Jan 31, 2008
    #28
  9. Shuggie

    anon_bb Honey Badger

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    Any chance of a listen from anybody?
     
    anon_bb, Jan 31, 2008
    #29
  10. Shuggie

    sastusbulbas

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    So is this PS Audio hissy? And is this hiss/hum evident through XLR and RCA?

    Anyone know how it compairs to the Chord phono or Ayre phono which both have XLR also?
     
    sastusbulbas, Feb 1, 2008
    #30
  11. Shuggie

    sq225917 Exposer of Foo

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    funny none of the reviews mentioned it, infact low noise is one of its claimed features.

    earthed through it's mains connection.... that's certainly different..
     
    sq225917, Feb 1, 2008
    #31
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