PSP is not a toy console, but a revolutionary control module for SEM synthesizer units.

In May 1976, the first polyphonic 8 voice was released, based on SEM modules. Eight modules represent eight independent voltage controlled filters, sixteen voltage controlled oscillators, eight LFOs. Operatively manage all these settings with only two hands seems to be impossible. To solve this problem, in October 1976 PSP (Polyphonic Synthesizer Programmer) was released, which not only allowed users to manage all settings providing a centralized control, but also had a memory for 16 presets.