Joranalogue Audio Design Contour 1

Joranalogue modules are probably the highest quality you'll find in eurorack.
The module feels extremely sturdy, with a thick aluminium panel. Markings are permanent so it holds time very well. The overall build quality is through the roof.

As for sound, this thing should be in every rack. It can find its way in every patch, as a slew limiter, envelope generator (with looping and audio rate envelopes), LFO, filter, LPG, random triggers, VCO, wavefolder, subharmonic generator... It's endless.

For me, the best swiss army knife module, you can't do without.