Ultimate Dynaco ST-70 upgrade kit, Dyna-70

Erhard-Audio

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We are pleased to announce that we have released our ultimate ST-70 upgrade kit, our Dyna-70.
This is 'hardcore' upgrade, eliminating the old driver circuit as well as the old power supply, replacing it with a modern 6SN7 based driver circuit and an all solid-state power supply!
For all the details, please visit our web page here, http://www.erhard-audio.com/DYNA-70.html


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Excellent! Exactly what a st70 needs to sound even remotely good!!
What circuit is used in driver section?
 
We are pleased to announce that we have released our ultimate ST-70 upgrade kit, our Dyna-70.
This is 'hardcore' upgrade, eliminating the old driver circuit as well as the old power supply, replacing it with a modern 6SN7 based driver circuit and an all solid-state power supply!
For all the details, please visit our web page here, http://www.erhard-audio.com/ST-70_Upgrage_Kit.html


D0oiGm.png
Mod - I just verified the link below works -

http://www.erhard-audio.com/DYNA-70.html
 
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yes, very similar to Mullard topology and just tried the link DYNA-70, it works.
Will update the other link, thanks for that.
 
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anybody know anything about the Dynaco 416 A repair manual something I can use as a ref. to restore it .... The amp has been put away for at least 25 to 30 years ?
 
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