Downloads for the (German) building instruction books used in the video:
[ Ссылка ]
Download the schematic of this upgrade here:
[ Ссылка ]
In the past months I've been experimenting with upgrading my Helios. I hope you'll enjoy the end result: a Helios with separate Wersivoices for the organ sounds and the instrumental sounds! As it's much easier to play proper live music now, there's lots more to come on the channel...
![](https://i.ytimg.com/vi/HWpa_dpLWfo/maxresdefault.jpg)