Spektr-4 1980
Sorry, this page is not translated yet. Automatic translation used.
The sound effects prefix Spectrum-4 has been produced since I quarter of 1980. The sound effects prefix "Spectrum-4" is designed to create various sound effects when playing electric music instruments in order to enrich their sound palette. The price of the console is 58 rubles. More information in the instructions of the console.
Documentation:
Information from collection of Valery Khartchenko