BASTL and Casper Electronics created something genuinely unusual with the SoftPop 2—a desktop synth that treats synthesis, sequencing, and external audio processing as equally important tools rather than afterthoughts. The collaboration between these two design-focused companies resulted in a machine that feels like it was built by people who actually use synthesizers rather than just spec them out.
At its core, the SoftPop 2 is a monophonic analog synthesizer with a digital sequencer and integrated control system. The sound engine centers on a triangle-core VCO with PWM modulation, feeding into BASTL's "Infinity" multimode filter offering lowpass, bandpass, and highpass responses. You get a looping attack-decay envelope that can switch into drone mode, a sample-and-hold circuit for stepped modulation, and a VCA with flexible triggering options. The sequencer is where things get interesting—eight steps that chain into patterns, with per-step control over pitch, gate, slide, and modulation depth. There's also a scale quantizer with eight user-editable scales, so you can lock into specific tuning systems or create your own constraints. The 37-point Eurorack-compatible patchbay gives you serious flexibility for patching, and the external audio input with envelope follower means you can feed in anything and process it through the filter and effects section. Six vertical faders handle the main parameters, while three horizontal faders control fine-tuning, resonance, and the distinctive POP control that shapes timbre through cross-modulation.
The SoftPop 2 has found a solid following among people who value hands-on control and unconventional sound design. It's praised for its sequencer depth and the way the patchbay opens up creative possibilities without requiring a full modular setup. Some users note the learning curve is real—there's a lot packed into that compact 173 x 112 x 41mm frame—but that complexity is intentional. The included light orb adds a genuinely useful visual feedback element that feels more purposeful than gimmicky. It runs on USB power and comes with a free BITWIG Studio 8-Track license, which is a nice bonus for people building a production setup.
