Roland's Wave Acceleration Synthesis was a bold experiment in the early 2000s, attempting to split the difference between the immediacy of sample-based sound design and the deep modulation possibilities of virtual analog synthesis. The SH-32 was their compact answer to that challenge, and it remains a genuinely unusual hybrid that doesn't quite fit into any conventional category.
The SH-32 is a four-part multitimbral desktop module with 32 voices of polyphony, built around two oscillators per voice plus sub-oscillators that don't eat into your voice count. You get 67 waveform variations ranging from classic analog shapes to entirely new digital waveforms like Spectrum and variable noise, all derived from sampled sources rather than pure mathematical generation. The filter section offers eight different types across 12dB and 24dB slopes, with options for lowpass, highpass, bandpass and peak modes. Two LFOs with seven waveform options give you plenty of modulation depth, and the whole signal path runs through two independent effects processors: 35 insert algorithms covering everything from distortion and compression to Roland's proprietary Groove effects like Slicer and Lo-Fi, plus 10 reverb and delay varieties that can be routed in series or parallel.
The front panel is refreshingly hands-on, covered in knobs and sliders for direct parameter access without menu diving, paired with a simple three-digit LED display. The programmable arpeggiator supports 64 user patterns and works beautifully with the chord memory function for complex techno and trance sequences. Built-in drum maps include samples from the TR-808 and TR-909, making it genuinely useful as a standalone groove tool or as a companion to your sequencer setup. The whole unit weighs under two kilograms and measures roughly 30 centimeters wide, so it fits easily into tight studio spaces or DJ setups.
Community reception has been mixed but respectful. Some users found the stepping artifacts when manually tweaking the cutoff knob slightly distracting, and the hybrid nature means it doesn't quite deliver the deep filter resonance of true analog or the sample-playback immediacy of pure wavetable synths.
