Low frequency amplifier `` UO-5 ''.
Amplifying and broadcasting equipmentThe low-frequency amplifier "UO-5" (another name is "U-0.5") since 1932 has been producing the hardware plant named after Kazitsky. The amplifier has an output power of at least 0.5 W and is intended for small radio broadcasting units with several loudspeakers of the "Record" type (1,2,3). The amplifier can only broadcast transmissions from the output of a radio receiver intended for receiving a loudspeaker or headphones. The amplifier "UO-5" ("U-0.5") can be used as an intermediate or preliminary to a more powerful amplifier.