| Audio distribution system Mikrofona ZU 25 | |
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| 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. |