Post pics of your builds....
Sep 15, 2010 at 11:59 AM Post #7,277 of 9,811

 
Quote:
This does not come out when the kiddies are around, just so you know Mr Duck.


Some one listened
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  My work here is done
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Sep 18, 2010 at 1:46 PM Post #7,278 of 9,811
My PPA V2 
 
Here are the pictures:

 

 
I have more pictures of my PPA V2 on Photobucket, just follow this link: http://s789.photobucket.com/albums/yy179/vgjako/PPA%20V2/
 
I have only used high-end components on this amp, listed below is the parts used:
- DACT CT-102 Audio Power supply (+/- 15 V)
- Burson Audio Single op-amps
- Elna Silmic II C1 and C4
- Wima MKP10 C2
- Wima MKS2 C5
- 10 pF Silver Mica C6
- Vishay 64W pots
- DACT CT2 50K
- Vishay Dale RN55 resistors
- Takman REY resistors
- 2N5484 Q1
- 2N5486 Q2
- PN4392 Q3, Q4
- 2N5087_J18Z Q-21-23
- 2N5088_J61Z Q31-33
- MJE243G Q24
- MJE253G Q34
- No TLE's (The power-supply is a dual supply)
 
Regards
vgjako 
 
Sep 19, 2010 at 1:09 AM Post #7,281 of 9,811
Sep 19, 2010 at 9:28 AM Post #7,284 of 9,811


Quote:
It isolates the connection to the computer 
" class="bbcode_smiley" height="" src="http://files.head-fi.org/images/smilies//smily_headphones1.gif" title="
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" width="" /> Not sure if I hear any difference, but I like the fact that my DAC now has galvanic isolation from the computer.
 

 


dont you worry about jitter?
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Sep 19, 2010 at 12:55 PM Post #7,286 of 9,811
Nice find Nebby, looks like a nice kit. I went ahead and ordered one. Hopefully it'll provide a small increase in SQ for the HiFace. I'll probably run a USB cable directly to the board rather than using the jack. Let me know if you find a suitable box to throw it in.
 
Sep 19, 2010 at 2:11 PM Post #7,287 of 9,811
I don't think it's compatible with the HiFace as I think I've read a few comments from folks saying it didn't work. The reason is probably due to the High Speed USB port requirement....the ADuM4160 only supports Full and Low speed.
 
I will probably be putting it in a Box Enclosure case to match up with my Gamma2, that'll give me enough space to use Neutrik USB jacks and mount a beefier DC jack to the panel. I also plan on taking out the switched mode regulator and directly sourcing the downstream power from a sigma25/sigma11.
 
Sep 19, 2010 at 7:13 PM Post #7,288 of 9,811
USB-only Gamma2/Sigma25:
 

 
All power derived from the Sigma25. Adaptable cable inlet.
 

 
For now, the filter and clipping settings are available from the front. That might change once I decide on a setting I like. I really like minimal panel installations.
 

 
This one purposely leaves room for the inevitable upgrade to the Gamma3.  
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  Learned that lesson with the Gamma1.
 

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