Summary

Do you play guitar...do you have keys? If you said yes to either of these things, it doesn't matter. Just print this if you want to.

I'd suggest using variable layer height to make the main vertical portion at 0.2 mm with 0.125 - 0.15 mm for the rest.

Infill at 10% or higher and supports of course for the slot.

To mount the amp, you'll need to buy some hardware:

1.) 3.5 to 1/4" jack adapter.

2.) Toggle bolts for mounting. You need these. If you mount with something else, the amp will likely fall off from the pulling force when removing the keys.

3.) I used these tiny lettered decals:
https://www.amazon.com/gp/product/B000BRFD6I/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

4.) Inputs:
https://www.amazon.com/gp/product/B0076CGVF8/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1