Did you know you can fake FM synthesis on an analog-style subtractive synth? Use the Audio-In trick (feedback loop).

In the context of synthesizers, a patch refers to a specific configuration of settings that determine the sound produced by the instrument. Patches can include adjustments to oscillators, filters, envelopes, effects, and other parameters that shape the sound. The SH-01A comes with a range of built-in patches, but the real magic happens when users create and share their own custom patches.

: You can find beautifully illustrated front-panel diagrams on that include rear-panel connection spaces. Physical Notebooks