Extra9 is a dedicated expansion for the NAVA - TR-909 clone by e-licktronic and is sold as a DIY electronic parts kit.
It adds a total of 37 extra pots and 4 extra switches to your NAVA TR-909 clone which increases the sonic potential of the popular TR-909 drum instruments tremendously. Adding the Extra9 modifications means that you get more possibilities to manipulate the synthesis parameters of each instrument while you can always go back to the original settings.
All the modifications have been thoroughly picked and tested for best sonic manipulations and of course all modifications are fully analog!
The expansion is meant to be installed on top of the existing NAVA main-board and fits seamlessly onto its layout.

Introduction to the Mods:
https://www.youtube.com/watch?v=EJ0d2U9myoc[/video]