Audio distribution system Mikrofona ZU 25

Year of manufacture: ?????????
Manufacturer: Mikrofona, Knotek Brothers, telephone and radiotechnics factory, Prague
Tubes used: ???????????
Wave bands: ???????????
Description:

A small audio distribution system for schools, factories or small towns, made by the Mikrofona company, which was later nationalised to become Tesla Strašnice. It contains a radio receiver, a turntable and microphone input and a 25W power stage with 100V output.