The Flash-Synth has an STM32, a tantalum SMD filter capacitor that dwarfs it, and a few support components on a flexible PCB that folds back on itself twice. This bit of circuit origami is ...

Where soft synths really start to come into their own ... modulation examples is the aforementioned LFO, modulating the filter frequency or the oscillator pitch to result in a ‘wowow’ sound ...

Every synth has its own character, but try to use one that has powerful oscillators, filters and snappy envelopes like the Korg MS-20, Novation Bass Station II or plugins like Arturia Pigments or ...