Shell waveshaper (white aluminium panel) and slug
4HP Panel 
6HP Panel
The labels on the panels are different:
- Width/Gap: sets the gap of the comparator
- Muddle/Side: changes the mix of the internal frequency doubler
- Tilt: add a tilt to each of the three sections
The sockets are:
- Modulation: modifies one edge of the window comparator: this is quite a gentle effect, more a huffing effect than a chorus
- Input: typically a saw, but any sloped wave (not squares or pulse) will produce output. 5V PP expected. A different level will be similar to change in Width.
- Alt Out: An alternative waveshape. This is really just one half of the wave. This output is lower level.
- Out: the main output. 4-7VPP
Freak Out! 