Goldmund Wiki and build 2017

Hoo, finally!
TO-3 Exicons with uPC1237 IC protection.

Various interchangeable modules are also designing 😉
 

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Maybe some of you know this Taobao site already.

Using their interchangable modules based amplifiers makes it easy to experiment with different input/output configurations. IE the Goldmund module as well as Accuphase, Pass and others are less than $1.
 

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  • Interchange_Modules_Gawain_module.jpg
    Interchange_Modules_Gawain_module.jpg
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Maybe some of you know this Taobao site already.

Using their interchangable modules based amplifiers makes it easy to experiment with different input/output configurations. IE the Goldmund module as well as Accuphase, Pass and others are less than $1.

That design is really bad. I saw them before. They use IRFP for Goldmund!
Plus, the module uses disrete JFET. That's not even Goldmund!
That's the reason why I want to do a very delicate module and mother board.
 
That design is really bad. I saw them before. They use IRFP for Goldmund!
Plus, the module uses disrete JFET. That's not even Goldmund!
That's the reason why I want to do a very delicate module and mother board.

There's a pcb for what they call "Goldmund bipolar", with bjt output, that is designed to be used with single or dual input fets.

I am using it to clone a Luxman 5M21 power amp. Soon I will open a thread telling the story.