FiiO Mont Blanc/E12 portable headphone amp, 880mW, slim design, full metal case. Bass boost and Cross feed!
Jun 17, 2014 at 10:48 PM Post #2,941 of 3,739
 
Nice, considering there is no such chip as a LMH49700...
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That's why I posted. Second opinion from audio chip doctors.
Also could not get the gist of their OP AMP OPA1611 text.
 
Jun 17, 2014 at 11:04 PM Post #2,943 of 3,739
 
That's why I posted. Second opinion from audio chip doctors.
Also could not get the gist of their OP AMP OPA1611 text.


I get this from Google
"Two-OP AMP OPA1611 is designed specifically for music. We did not change."
 
The OPA1611 is actually a good single channel opamp, so I guess they didn't modify it in any way.
 
 
 

 
Jun 17, 2014 at 11:06 PM Post #2,944 of 3,739
Jun 17, 2014 at 11:22 PM Post #2,945 of 3,739
 
Spoken in drawl...
"Y'all give us a bag of them there LMH49700's..."
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Mailed them anyway about their LMH49700.They look like they mod entry-level stuff from the site....with imaginary chips !
 
Jun 17, 2014 at 11:39 PM Post #2,946 of 3,739
 
Mailed them anyway about their LMH49700.They look like they mod entry-level stuff from the site....with imaginary chips !


It will be good to see what they say... Yes indeed the do very simple mods, solder pin 1 to ground (LME49600) and change a few caps.
 
There was a guy who PM'ed me one time about modding the Colorfly C3, he changed the DAC to the Line Out version, added a buffer stage and a pile of caps. I even think he increased the voltage of the amp to accommodate for the Line Out buffer, filled up the little space that was free inside the C3's case.
 
Jun 17, 2014 at 11:59 PM Post #2,948 of 3,739
  Sounds like Buffalo Chips.


Could be, I wonder if it has one of these in the silicon?

 
I like the little "Chips" behind the Buffalo, there was one added for each build revision. 
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Jun 18, 2014 at 12:03 AM Post #2,949 of 3,739
 
Could be, I wonder if it has one of these in the silicon?

 
I like the little "Chips" behind the Buffalo, there was one added for each build revision. 
biggrin.gif

Looks like the latest 9nm geometry. Those are almost scat molecules. I imagine any opamp made from those chips must have a serious slew rate.
 
Jun 18, 2014 at 12:23 AM Post #2,950 of 3,739
  Looks like the latest 9nm geometry. Those are almost scat molecules. I imagine any opamp made from those chips must have a serious slew rate.

LOL!
 
Jun 18, 2014 at 5:12 PM Post #2,951 of 3,739
You can try a different source and see if it does the same thing. If it is still the same then try a different cable. If the trouble persist then the input is probably damaged.


Yeah, I did all this already, which is how I know the problem is the cable. And to be more specific, the issue isn't the position of the connector inside the amp or source. The problem is the position (or orientation?) of the line between the connectors. It seems that half of the ways that the cable wants to orient leads to loss of sound in my left ear and noise in the right. There is a loss of connection in the line somewhere.
 
Jun 18, 2014 at 10:20 PM Post #2,953 of 3,739
  Looks like the latest 9nm geometry. Those are almost scat molecules. I imagine any opamp made from those chips must have a serious slew rate.


So here were the E12 mod kit "magic Buffalo molecules" ...........
Quote "He change capacitor 11 pcs (8 Brown , 2Green)"..unquote
 

 
Jun 18, 2014 at 10:33 PM Post #2,954 of 3,739
 
So here were the E12 mod kit "magic Buffalo molecules" ...........
Quote "He change capacitor 11 pcs (8 Brown , 2Green)"..unquote
 
 
 

What's supposed to be so special about the capacitors?
 
Jun 18, 2014 at 10:36 PM Post #2,955 of 3,739
Also the two jumpers from pin 1 to 3 on each of the LME49600's to switch it into high BW mode.

Now if he only had a secret stash of Black Gate's...
 

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