Two LFOs and a unique sample-and-hold section provided capabilities not found in competing self-contained synthesizers of the time. The SH-3A was Roland's first non-preset based synth.
In the context of synthesizers, the SH-3A stood out due to its two LFOs and sample-and-hold section, capabilities not present in competing standalone instruments of its kind. This model represented Roland's entry into non-preset based synthesis.