Germanium investigations

[Svjatoslav]

You can get an array of more common MP38, MP37, MP35.
Even without radiators.
They have similar technology and frequency properties to the GT404.
And for symmetrical operation of the output stage, use a circlotron circuit

 

[jpatay]

I assembled the amplifier according to this circuit. Very good sound and bass incredible.

 

[HJH]

Yes!
Try to make PS from Ge elements too. Like EMT does in some designs? One example Noise X module... And others too.
And maybe copper plate board under the elements? As ground plane. Everything else can be the same. I like Point to point.
Great design HLH BTW
🙂 Thanks

Thanks, Zoran.

Exactly I have two different PS, one series- and one shunt reg. Both full silicon designs using zener reference voltage, can try later full Ge PS when I have time. Same design should work if using series reg. Don't want to post any full Si design's in this thread...