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Jade II Amp, refuting its a clone.

  1. TeamHiFiMAN
    Hi there,

    HIFIMAN posted a video about the comparison between the Jade II amplifier and STAS SRM-001 amplifier, here is the link: https://www.youtube.com/watch?v=9G0CJBdwtDc&t=11s

    There are some posts that state our HIFIMAN Jade 2 amplifier copied STAX SRM-001 amplifier design. We do have a STAX SRM-002, the younger sister of SRM-001, which is very similar to the 001.

    Here in our office, we have the HIFIMAN Jade II amplifier alongside this STAX SRM 002. Looking inside here we have the Jade II amplifier board and the same corresponding board from the Stax SRM 002.
    [​IMG]
    [​IMG]

    Moving on, then you can see that the HIFIMAN Jade II uses a cascode differential circuit of transistors and more sets whereas the Stax uses transistors only.
    [​IMG]
    [​IMG]
    Then we go on to the electrical supply, which in the case of Jade II uses an 80w transformer with an output of two times of 320V and a total amp output of 1200mw at 10kHz. In comparison, the STAX SRM-002 has an electrical supply of 3V rubbing off a couple of AA batteries and a max amp output power of 147mw at 10 kHz. As you can see a high-speed train has wheels and is a great form of public transport and a bicycle, well it also has wheels and is also a form of public transport.
    [​IMG]
    [​IMG]

    Now, we shall take a look at and test the amplifier which was used by the Canadian gentleman who reported an issue with his Jade II System.

    We will still set the testing voltage at 1000V DC.

    We will connect with the neutral wire and live wire of the electrical socket to test the electrical insulation between the transformer and the ground. Now we measure with the Ohmmeter at 1000V DC, the impedance is infinite, thus the voltage leakage is zero.

    First we open the Jade2 and get ready to test. It works well (please do not open and use the amp at home.) Then we check the voltage between two working points. Now we can begin testing. Here we are testing the high voltage supply point, DC 671V, normal.

    Then we test the voltage between -15V point and +15V point of the Amp. -15V, +15V, which is exactly as it should be.

    Thank you for your attention.

    HIFIMAN Team
     
    HiFiMAN Innovating the art of listening. Stay updated on HiFiMAN at their sponsor page on Head-Fi.
     
    http://hifiman.com
    crabdog likes this.
  2. paradoxper
    Innovating the art of bull****ting. Love it!
     
    Whitigir and Jones Bob like this.
  3. rumina
    1 april fool a bit late? :thinking:
     
    Jones Bob likes this.

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