Jump to content
spritzer

Hifiman Jade II

Recommended Posts

HF moderators have deleted and edited some of the posts after they were up for a while (and will likely react faster now that that thread is on their radar), but, as far as I can tell, have left all substantive technical discussion intact. Silence from the hifiman rep — which is smart: if he can't win, he should ignore the discussion until it's forgotten. Though he might just be taking the weekend off. Really curious to see where this goes.

Share this post


Link to post
Share on other sites
On 3/28/2019 at 4:29 PM, spritzer said:

I also don't think Fang really understands what is going to happen now.  I'm going to track down a Shangri-la jr. amp no matter the cost just to rip it apart.  :rofl:

Really looking forward to this.

Share this post


Link to post
Share on other sites
On 3/28/2019 at 6:22 PM, Pars said:

Well, I feel the ban stick coming. Posted on HF regarding the FCC Part 15 not being applicable. Also called jamato8 out as a known shill from years ago...

I actually tried to get banned over there Pars. Even called John Amatto a Gaslighting Audio Whore. They just deleted both of our back and forth posts with a warning. 😂

Share this post


Link to post
Share on other sites

Other than laughing at his badly made crap for years, nope.  I was the first one to take the original Jade apart and reveal the crap it was but that hardly counts as it was over a decade ago.  Funny enough, the cable used on the original Jade is superior to the one they use now, gotta love "progress". 

  • Like 1

Share this post


Link to post
Share on other sites

 The srm-001 is an opamp driving a fet that drives a transistor (cascode) into a load resistor and is cap coupled to the output. (cascode differential)

The jade2 is an opamp driving a transistor that drives a mosfet (cascode) into a load resistor and is cap coupled to the output. The calculation of output capacitance is flat out wrong as the middle of the cascode is AC ground. (cascode differential)

Just about identical. Obviously the jade2 consumes a bunch more power and puts out a bunch more power.

I own 2 hifiman products. Both are built like shit. I'm unlikely to buy hifiman products ever again.

stxp.gif

Edited by kevin gilmore
  • Like 7
  • Haha 2

Share this post


Link to post
Share on other sites

Only thing I learned from Fang's latest post is that a bicycle is not a train...

  • Like 1

Share this post


Link to post
Share on other sites
28 minutes ago, GeorgeP said:

Only thing I learned from Fang's latest post is that a bicycle is not a train...

Something lost in the translation to Chinglish? 😲

I learned that Fang is either a retard or deliberately trying to con his customers by using an Ohmmeter to “measure” the DC resistance of a transformer with 1000VDC across it. All in an apparent attempt to negate/quantify transformer AC leakage impedance/reactance current that shocked the YouTube video guy. Naturally, the VOM’s overvoltage protection kicks in and an “infinite resistance” is displayed. Just as intended? 

You don’t need to be Penn and Teller to spot that slight of hand.

  • Like 1

Share this post


Link to post
Share on other sites
47 minutes ago, Laowei said:

Something lost in the translation to Chinglish? 😲

 

 

I don't think so. He actually has a picture of a train and a picture of a bicycle side-by-side, and then goes on to state that they are not the same thing. I found that illustration particularly compelling. Though I think he might have had the arrows from the amplifiers pointing the wrong way...

Edited by GeorgeP
  • Haha 1

Share this post


Link to post
Share on other sites
17 hours ago, GeorgeP said:

Only thing I learned from Fang's latest post is that a bicycle is not a train...

 

21 hours ago, HIFIMANOfficial said:

lol.

Hifiman bicycle Jade 1

image.png.cdcff0e82ccd8446a775018030a7c806.png

Hifiman bicycle Jade 2

image.png.f18e8a7071b15e51d198d14671225892.png

 

Hifiman train Jade 1

image.thumb.png.b6a69e2092a9d0a7917fa7a0805f8a54.png

Hifiman train Jade 2

image.png.bc53b8289e77dba31100e2979c2b3917.png

 

  • Haha 1

Share this post


Link to post
Share on other sites

history lesson

(unless birgir says otherwise)

As far as I can tell the first stax amplifier to use differential cascode circuit is the srm-1 first introduced in 1979

long before hifiman was even a company

  • Like 2
  • Thanks 1

Share this post


Link to post
Share on other sites

Yes, I think that was the first one.  I can't find the schematic with a quick search but it should be here somewhere.  Then we had the SRM-1 Mk2 first version in 1982 but in reality, most of that improvement had already been done to the later SRM-1 amps.  It's fun to open those up... you never know what you are going to find. 

Share this post


Link to post
Share on other sites
On 4/8/2019 at 11:49 AM, HIFIMANOfficial said:

lol.

Your best respond at the forum where the person you are calling out for is “active” ? I think the word “BS” is an understatement 

Edited by Whitigir

Share this post


Link to post
Share on other sites

in all fairness I own the jade2 and drive it using my 007Tii and I like it more than stax 407, 307 and its a toss between L300LE and Jade2

But 007 mk2 is the best stat I own

Share this post


Link to post
Share on other sites
On 4/9/2019 at 12:34 AM, kevin gilmore said:

I own 2 hifiman products. Both are built like shit. I'm unlikely to buy hifiman products ever again.

Me too. Hifiman stuffs are probably the worst thing I have ever bought in this hobby. Never again. 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×