> For the complete documentation index, see [llms.txt](https://holy-city-audio.gitbook.io/spincad-designer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://holy-city-audio.gitbook.io/spincad-designer/blocks/controls/two-stage.md).

# Two-stage

Given that the FV-1 only supports 3 control pots, once your patch goes over the normal amount of complexity, it can be a challenge figuring out how to control everything the way you like it.  So you wind up controlling multiple parameters with a single pot.

<figure><img src="/files/wSl5MPCJdDEVBsgoCDuU" alt=""><figcaption></figcaption></figure>

The Two-Stage block (Controls menu) takes a single 0-1 input (e.g. from a pot) and generates two outputs.

<figure><img src="/files/Ysl1jjOoUyXra1X1c2SU" alt=""><figcaption></figcaption></figure>

Stage 1

* Goes from 0 to 1 while the input goes from 0 to 0.5.
* Stays at 1 while the input goes from 0.5 to 1.

Stage 2

* Stays at 0 while the input goes from 0 to 0.5.
* Goes from 0 to 1 while the input goes from 0.5 to 1.

Of course, you can add scale/offsets, power or other control signal shaping options to the outputs to fine tune your idea.