Joachim Gerhard Filter Buffer for ES9022 - diyAudio
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Old 23rd July 2012, 06:52 PM   #1
EUVL is offline EUVL  Europe
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Default Joachim Gerhard Filter Buffer for ES9022

Here is a new GB for the Joachim Gerhard Buffer Filter.

The orginal schematics can be found here :
Anybody using the new ESS Vout DAC (ES9022)?

The prototype is shown here :
Anybody using the new ESS Vout DAC (ES9022)?

Details of the offer :
Anybody using the new ESS Vout DAC (ES9022)?

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

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


Patrick
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Last edited by EUVL; 23rd July 2012 at 06:59 PM.
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Old 23rd July 2012, 06:54 PM   #2
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Quote:
Originally Posted by EUVL View Post
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
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Old 23rd July 2012, 06:56 PM   #3
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Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
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Old 23rd July 2012, 07:02 PM   #4
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As I understand, those buffers suit only V-Out DAC chips. Is it correct?
Are those buffers intended for Single Ended DAC chips?
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Old 23rd July 2012, 07:11 PM   #5
EUVL is offline EUVL  Europe
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> As I understand, those buffers suit only V-Out DAC chips. Is it correct?

Can also be used after the IV circuit, e.g.
Zen -> Cen -> Sen, evolution of a minimalistic IV Converter

> 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
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Old 23rd July 2012, 07:23 PM   #6
acko is offline acko  Australia
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Default GB JG Filter

Shaman 1x EU
MisterRogers 1x USA
jean-paul 1x EU
unixdeveloper 1x USA.
buzzforb 2x USA
Acko 1X Australia
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Old 23rd July 2012, 07:45 PM   #7
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Quote:
Originally Posted by EUVL View Post
> As I understand, those buffers suit only V-Out DAC chips. Is it correct?

Can also be used after the IV circuit, e.g.
Zen -> Cen -> Sen, evolution of a minimalistic IV Converter

> 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?
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Old 23rd July 2012, 08:03 PM   #8
EUVL is offline EUVL  Europe
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> 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
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Old 23rd July 2012, 08:04 PM   #9
EUVL is offline EUVL  Europe
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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
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Old 23rd July 2012, 09:01 PM   #10
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Thanks, Patrick.
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