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-   -   Joachim Gerhard Filter Buffer for ES9022 (http://www.diyaudio.com/forums/group-buys/216669-joachim-gerhard-filter-buffer-es9022.html)

EUVL 23rd July 2012 06:52 PM

Joachim Gerhard Filter Buffer for ES9022
 
1 Attachment(s)
Here is a new GB for the Joachim Gerhard Buffer Filter.

The orginal schematics can be found here :
http://www.diyaudio.com/forums/digit...ml#post2867664

The prototype is shown here :
http://www.diyaudio.com/forums/digit...ml#post3040691

Details of the offer :
http://www.diyaudio.com/forums/digit...ml#post3101883

Please add you name, continent, and quantity required as below :

Shaman 1x EU
MisterRogers 1x ??
jean-paul 1x EU
unixdeveloper 1x USA.
....
....


Patrick

buzzforb 23rd July 2012 06:54 PM

Quote:

Originally Posted by EUVL (Post 3101908)
Here is a new GB for the Joachim Gerhard Buffer Filter.

Please add you name, continent, and quantity required as below :

Shaman 1x EU
MisterRogers 1x ??
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
....


Patrick


MisterRogers 23rd July 2012 06:56 PM

Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA

Joshua_G 23rd July 2012 07:02 PM

As I understand, those buffers suit only V-Out DAC chips. Is it correct?
Are those buffers intended for Single Ended DAC chips?

EUVL 23rd July 2012 07:11 PM

> As I understand, those buffers suit only V-Out DAC chips. Is it correct?

Can also be used after the IV circuit, e.g.
http://www.diyaudio.com/forums/digit...converter.html

> Are those buffers intended for Single Ended DAC chips?

Each PCB is meant for 2 channels of single ended, or one channel of balanced.
So you would need 2 boards for stereo balanced.


Patrick

acko 23rd July 2012 07:23 PM

GB JG Filter
 
Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
Acko 1X Australia

Joshua_G 23rd July 2012 07:45 PM

Quote:

Originally Posted by EUVL (Post 3101940)
> As I understand, those buffers suit only V-Out DAC chips. Is it correct?

Can also be used after the IV circuit, e.g.
http://www.diyaudio.com/forums/digit...converter.html

> Are those buffers intended for Single Ended DAC chips?

Each PCB is meant for 2 channels of single ended, or one channel of balanced.
So you would need 2 boards for stereo balanced.


Patrick

Thanks, Patrick.
Just to be clear, is the Joachim Gerhard Filter Buffer an evolvement if the Sen/Sen I/V?
Can the Joachim Gerhard Filter Buffer be operated on batteries, or conventional PSU, or both?
Will there be an option to wire the Buffer for Current Output DAC Chips?

EUVL 23rd July 2012 08:03 PM

> Just to be clear, is the Joachim Gerhard Filter Buffer an evolvement if the Sen/Sen I/V?

It evolved round my ES9022 / WM8804 modules that Joachim had.
Please read the thread linked in post #1 for details.

> Can the Joachim Gerhard Filter Buffer be operated on batteries, or conventional PSU, or both?

Both.

> Will there be an option to wire the Buffer for Current Output DAC Chips?

No.


Patrick

EUVL 23rd July 2012 08:04 PM

BTW the commercial right still belongs to Joachim Gerhard who has his own audio company.
So this is for DIY only, with his permission.


Patrick

Joshua_G 23rd July 2012 09:01 PM

Thanks, Patrick.


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